ETC 6639S-1-502

w w w . b o u r n s . c o m
Precision Potentiometers
I.
Product Selection Guide.............................................................258
II. Potentiometers
Multiturn..............................................................................260
Single-Turn..........................................................................265
Knobpot® .............................................................................270
Pushbutton (Digital Readout) ..............................................272
III. Definitions & Test Procedures....................................................274
Specifications are subject to change without notice.
257
Product Selection Guide
Multiturn Precision Potentiometers
Resistance Resistance
Range
Tolerance
(Ohms)
Model
No.
Turns
Element
Type
Standard
Linearity
Pkg.
Dia.
Pkg.
Depth
Shaft
Dia./Length
Mount
Page
No.
3400
10
Wirewound
±3%
100-500K
±0.15%
1-13/16”
(30mm)
1-3/4”
(46mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
260
3500
10
Wirewound
±3%
50-100K
±0.20%
7/8”
(22mm)
1”
(25mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
261
3540
10
Wirewound
±5%
100-100K
±0.25%
7/8”
(22mm)
3/4”
(19mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
262
3541
10
Hybritron®
±10%
1K-100K
±0.25%
7/8”
(22mm)
3/4”
(19mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
262
3543
3
Wirewound
±5%
20-50K
±0.25%
7/8”
(22mm)
3/4”
(19mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
263
3545
5
Wirewound
±5%
50-50K
±0.25%
7/8”
(22mm)
3/4”
(19mm)
1/4” X 13/16”
(6 X 21mm)
Bushing
263
3590
10
Wirewound
±5%
200-100K
±0.25%
7/8”
(22mm)
3/4”
(19mm)
Various
Bushing
264
Standard
Linearity
Pkg.
Dia.
Pkg.
Depth
Shaft
Dia./Length
Mount
Page
No.
Single-Turn Precision Potentiometers
258
Resistance Resistance
Range
Tolerance
(Ohms)
Model
No.
Element
Type
6537
Conductive
Plastic
±10%
1K-100K
±1%
7/8”
(22mm)
1/2”
(13mm)
1/8” X 1/2”
(3 X 12.7mm)
Servo
265
6538
Conductive
Plastic
±10%
1K-100K
±1%
7/8”
(22mm)
19/32”
(15mm)
1/8” X 1/2”
(3 X 12.7mm)
Servo
265
6539
Conductive
Plastic
±15%
1K-100K
±2%
7/8”
(22mm)
19/32”
(15mm)
1/8” X 1/2”
(3 x 12.7mm)
Servo
268
6574
Conductive
Plastic
±10%
1K-100K
±0.1%
2”
(51mm)
19/32”
(15mm)
1/4” X 7/8”
(6 X 22mm)
Servo
266
6637
Conductive
Plastic
±10%
1K-100K
±1%
7/8”
(22mm)
9/16”
(14mm)
1/8” X 7/8”
(3 X 22mm)
Bushing
267
6639
Conductive
Plastic
±15%
1K-100K
±2%
7/8”
(22mm)
21/32”
(17mm)
1/4” X 7/8”
(6 x 22mm)
Bushing
268
6657
Conductive
Plastic
±10%
1K-100K
±1%
1-5/16”
(33mm)
25/32”
(20mm)
1/4” X 7/8”
(6 X 22mm)
Bushing
269
Specifications are subject to change without notice.
Product Selection Guide
Knobpot® Precision Potentiometers
Resistance Resistance
Range
Tolerance
(Ohms)
Model
No.
Turns
Element
Type
3600
10
Wirewound
±5%
3610
10
Wirewound
±5%
Accuracy
Pkg.
Dia.
Pkg.
Depth
Shaft
Dia./Length
Mount
Page
No.
100-100K
See
Data
Sheet
3/4”
(19mm)
See
Data
Sheet
N/A
Bushing
270
100-100K
See
Data
Sheet
7/8”
(22mm)
See
Data
Sheet
N/A
Snap-in
271
Accuracy
Pkg.
Dia.
Pkg.
Depth
Shaft
Dia./Length
Mount
Page
No.
Digital Pushbutton Potentiometers
Resistance Resistance
Range
Tolerance
(Ohms)
Model
No.
Digits
Element
Type
3682
2
Cermet
±3%
50-1 Meg
See
Data
Sheet
See
Data
Sheet
See
Data
Sheet
N/A
Snap-in
272
3683
3
Cermet
±3%
50-1 Meg
See
Data
Sheet
See
Data
Sheet
See
Data
Sheet
N/A
Snap-in
272
Specifications are subject to change without notice.
259
Features
■
■
■
■
■
Bushing mount
Optional ±0.05 linearity option
Excellent wiper stability
High stop strength
Sealable
3400 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range .................................................................100 to 500K ohms
Resistance Tolerance..................................................................................................±3%
Independent Linearity ............................................................................................±0.15%
Resolution .........................................................................See recommeded part number
Effective Electrical Angle .............................................................................3600° +4°, -0°
Absolute Minimum Resistance .............1 ohm or 0.15% maximum (whichever is greater)
Noise ........................................................................................100 ohms ENR maximum
Power Rating (Voltage Limited By Power Dissipation, or ............................(40°C) 5 watts
1,000 VAC, Whichever Is Less) .................................................................(125°C) 0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
80,000 Feet ........................................................................................300 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range....................................................-65°C to +125°C
Dynamic Temperature Range .................................................................+1°C to +125°C
Temperature Coefficient2 ........................................................±20ppm/°C maximum/unit
Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B
Total Resistance Shift ..............................................................................±2% maximum
Vibration.......................................................................................................................10G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.1% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.1% maximum
Load Life ............................................................................................1,000 hours, 5 watts
Total Resistance Shift ..............................................................................±2% maximum
Rotational Life (No Load) .......................................................2,000,000 shaft revolutions2
Total Resistance Shift ..............................................................................±5% maximum
Mechanical Characteristics1
Mechanical Angle ........................................................................................3600° +4°, -0°
Shaft Runout................................................................................0.002 in. (0.05mm) T.I.R.
Shaft End Play .............................................................................0.005 in. (0.13mm) T.I.R.
Shaft Radial Play .......................................................................0.0025 in. (0.06mm) T.I.R.
Pilot Diameter Runout .................................................................0.002 in. (0.05mm) T.I.R.
Lateral Runout .............................................................................0.005 in. (0.13mm) T.I.R.
Stop Strength ...................................................................550 oz.-in. (388 Ncm) minimum
Torque (Starting & Running) ..............................................2.0 oz.-in. (1.4 Ncm) maximum
Backlash......................................................................................................1.0° maximum
Weight................................................................................................Approximately 110G
Terminals.......................................................................................Gold-plated solder lugs
Markings....................................Manufacturer’s name and part number, resistance value
and tolerance, linearity tolerance, wiring diagram, date code
Ganging ..................................................................................................2 cups maximum
6.35
(1/4)
WIPER
CCW
CW
3/8"-32 2A THD UNEF
29.37
(1-5/32)
45° X .25
CHAMFER
1-13/16
(46.04)
DIA.
10.32 + .00/ - .05
(.4062 + .000/ -.002)
1.52
(.06)
7.94
5/16
PILOT DIA.
39.4
FOR
(1.55)
ADDITIONAL CUP
44.45 ± .79
(1-3/4 ± 1/32)
ADD
20.64
(13/16)
1.02 WIDE
(.04) SLOT
1.02
X
DEEP
(.04)
2.36
DIA. TYP.
(.093)
4.76
(3/16)
TYP.
6.34 + .00/ - .01
(.2497 + .0000/ - .0003)
SHAFT DIA.
14.3
(9/16)
3.18
DIA. ANTI-ROTATION PIN
(.125)
1.02
PAST MOUNTING SURFACE
EXTENDS
(.04)
NOTE: LOCKWASHER AND HEX NUT TO BE
SUPPLIED WITH EACH UNIT.
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
( IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
Recommended Part Numbers
Part Number
3400S-1-102
3400S-1-502
3400S-1-103
Resistance
1,000
5,000
10,000
Resolution
.020
.013
.010
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
1
2
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details for resistances below 500 ohms and above 100K ohms.
260
Specifications are subject to change without notice.
Features
■
■
■
■
■
Bushing mount
Sealable
Non-standard features and specifications
available
Optional high torque feature
Optional center tap feature
■
Gangable
3500 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range
...................................50 to 200K ohms
Resistance Tolerance.......................±3%
Independent Linearity .................±0.20%
Resolution
...........See recommeded part numbers
Effective Electrical Angle
.....................................3600° +10°, -0°
Absolute Minimum Resistance/Minimum
Voltage
.....................1 ohm or 0.1% maximum
(whichever is greater)
Noise ..............100 ohms ENR maximum
Power Rating (Voltage Limited By Power
Dissipation or 325 VAC, Whichever Is Less)
+70°C ........................................2 watts
+125°C ........................................0 watt
Dielectric Withstanding Voltage
MIL-STD-202, Method 301
Sea Level..............1,500 VAC minimum
70,000 Feet .............400 VAC minimum
Insulation Resistance
(500 VDC) ....1,000 megohms minimum
Environmental Characteristics
Operating Temperature
Static Operation Temp Range
...................................-65°C to +125°C
Dynamic Temp Range
.....................................+1°C to +125°C
Temperature Coefficient2
...................±50ppm/°C maximum/unit
Vibration............................................20G
Wiper Bounce
.....................0.1 millisecond maximum
Total Resistance Shift ...±2% maximum
Voltage Ratio Shift .....±0.1% maximum
Shock..............................................100G
Wiper Bounce
.....................0.1 millisecond maximum
Total Resistance Shift ...±2% maximum
Voltage Ratio Shift .....±0.1% maximum
Load Life .................1,000 hours, 2 watts
Total Resistance Shift ...±2% maximum
Rotational Life (No Load)
..................2,000,000 shaft revolutions2
Total Resistance Shift ...±5% maximum
Moisture Resistance .........MIL-STD-202,
Method 103,Condition B
Total Resistance Shift ...±2% maximum
1
Mechanical Characteristics1
Mechanical Angle ...........3600° +10°, -0°
Shaft Runout
.......................0.002 in. (0.05mm) T.I.R.
Lateral Runout
.......................0.005 in. (0.13mm) T.I.R.
Pilot Diameter Runout
.......................0.002 in. (0.05mm) T.I.R.
Shaft End Play
.......................0.005 in. (0.13mm) T.I.R.
Shaft Radial Play
.......................0.003 in. (0.08mm) T.I.R.
Stop Strength
.....................96 oz.-in. (67.8 Ncm) min.
Torque (Starting & Running)
...................0.6 oz.-in. (0.42 Ncm) max.
Backlash...........................1.0° maximum
Weight.......................Approximately 28G
Terminals............Gold-plated solder lugs
Ganging .......................2 cups maximum
Recommended Part Numbers
Part Number
3500S-2-102
3500S-2-502
3500S-2-103
Resistance
1,000
5,000
10,000
Resolution
.030
.018
.019
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
3500S-2/3501H-1
WIPER 5.46 ± .76
(.215 ± .030)
CCW
CW
3/8"-32 2A THD UNEF
.25
X 45° CHAMFER
(.010)
10.32 + .00/ - .05
(.4062+.000/-.002)
PILOT DIA.
1.52
(.06)
.6.34 + .00/- .01
DIA.
(.249+.0000/-.0003)
8.0 ± .38
(.315 ± .015)
25.4 ± .51
(1.00 ± .02)
12.7
REF.
(1/2)
20.64 ±.79
(13/16 ± 1/32)
45° ± 5°
8.9
(.35)
45° ± 5°
LOCATION OF OPTIONAL
.29
A/R PIN ON
R
(7.37)
ADJUSTMENT SLOT
.81
WIDE X
(.032)
.81 ± .25
DEEP
(.032 ± .010)
16.0
(.63) R
MAX.
22.23
(7/8)
NOTE: LOCKWASHER AND HEX NUT TO BE
SUPPLIED WITH EACH UNIT.
NOTE: SHAFT LENGTH VARIATIONS
FOR OTHER OPTIONS CONSULT FACTORY.
3500S-1-RC
11/16
(17.46)
3500S-2-RC
13/16
(20.64)
3501H-1-RC
13/16
(20.64)
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details for resistances below 500 ohms.
2
Specifications are subject to change without notice.
261
Features
■
■
■
■
Bushing mount
Optional center tap and rear
shaft extension
Optional AR lug feature
Gangable with common or concentric
shafts
■
■
■
High torque available
Optional 0.1% linearity
Non-standard features and specifications
available
3540/3541 - Precision Potentiometer
3540
Wirewound Element
3541
Hybritron® Element
3540S-1/3541H-1
18.3
(.72)
Electrical Characteristics1
Standard Resistance Range ..........100 to 100K ohms..................1K to 100K ohms
Resistance Tolerance......................±5% ......................................±10%
Independent Linearity ....................±0.25% ..................................±0.25%
Resolution ......................................See recommended part numbers Essentially infinite
Effective Electrical Angle ................3600° +10°, -0° ......................3600° +10°, -0°
Absolute Minimum Resistance/......1 ohm or 0.1% maximum ......Minimum voltage
Minimum Voltage
(whichever is greater)
0.2% maximum
Noise ..............................................100 ohms ENR maximum ......Output smoothness 0.1%
maximum
Power Rating (Voltage Limited
By Power Dissipation or
447 VAC, Whichever Is Less)
+70°C ..........................................2 watts ..................................2 watts
+125°C ........................................0 watt ....................................0 watt
Dielectric Withstanding Voltage......MIL-STD-202, Method 301 ....MIL-STD-202, Method 301
Sea Level ....................................1,000 VAC minimum ..............1,000 VAC minimum
Insulation Resistance
(500 VDC) ....................................1,000 megohms minimum ....1,000 megohms minimum
14.35 ± .38
(.565±.015)
10.32 +.00/.05
DIA.
(.406+.000/-.002)
3
1.52
(.06)
6.342 + .000/ - .008
(.2497+.0000/-.0003)
DIA.
7.92 ± .38
(.312 ± .015)
19.05 ± .38
(.750 ± .015)
20.62 ± .79
(.812 ± .031)
OPTIONAL ANTIROTATION LUG
(-91) 1.42 X .50 ON 7.4 RADIUS.
LENGTH 1.27 FROM MOUNTING SURFACE.
(SUGGESTED PANEL HOLE 1.6 DIA.)
30°
± 5°
6.35
(.25)
15.88
R MAX.
(.625)
12.45
(.49)
22.23 ± .38
(.875 ± .015)
Mechanical Characteristics1
Mechanical Angle ..........................3600° +10°, -0° ......................3600° +10°, -2°
Shaft Runout ..................................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Lateral Runout ................................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Pilot Diameter Runout ....................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Shaft End Play ................................0.012 in. (0.30mm) T.I.R. ........0.012 (0.30mm) T.I.R.
Shaft Radial Play ............................0.003 in. (0.08mm) T.I.R. ........0.003 (0.08mm) T.I.R.
Stop Strength ................................75 oz-in. (53 Ncm) minimum ..75 oz.-in. (53 Ncm) minimum
Torque (Starting & Running)............0.6 oz.-in. (0.35 Ncm) max. ..0.6 oz.-in. (0.35 Ncm) max.
Backlash ........................................1.0° maximum ........................1.0° maximum
Weight ............................................Approximately 21G ................Approximately 22.5G
Terminals ........................................Gold-plated solder lugs ........Gold-plated solder lugs
Ganging ..........................................2 cups maximum....................2 cups maximum
3/8" 32-UNEF-2ATHD
.25
X 45° CHAMFER
(.010)
ADJUSTMENT
SLOT .81 WIDE
(.032)
X .81±.25 DEEP
(.032±.010)
2
Environmental Characteristics1
Operating Temperature
Static Operation Temp Range......-55°C to +125°C ....................-55°C to +125°C
Dynamic Temp Range..................+1°C to +125°C......................+1°C to +125°C
Temperature Coefficient2 ..............±50ppm/°C maximum/unit ....±100ppm/°C maximum/unit
Vibration..........................................15G ........................................15G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Shock..............................................50G ........................................50G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Load Life ........................................1,000 hours, 2 watts ..............1,000 hours, 2 watts
Total Resistance Shift ..................±2% ......................................±5%
Rotational Life (No Load) ................1,000,000 shaft revolutions2 ..5,000,000 shaft revolutions2
Total Resistance Shift ..................±5% maximum ......................±5% maximum
Moisture Resistance ......................MIL-STD-202, Method 103, ..MIL-STD-202, Method 103,
Condition B
Condition B
Total Resistance Shift ..................±2% maximum ......................±5% maximum
5.72 ± .38
(.225±.015)
1
MTG. FACE
15.88
DIA. MIN.
(.625)
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details.
2
Recommended Part Numbers
Part Number
3540S-1-201
3540S-1-501
3540S-1-102
3540S-1-202
3540S-1-502
3540S-1-103
3540S-1-203
262
Resistance
200
500
1,000
2,000
5,000
10,000
2,000
Resolution
.042
.031
.027
.021
.021
.019
.014
Part Number
3540S-1-103
3540S-1-203
3540S-1-503
3540S-1-104
3541H-1-102
3541H-1-502
3541H-1-103
Resistance
10,000
20,000
50,000
100,000
1,000
5,000
10,000
Resolution
.019
.014
.011
.008
.027
.021
.019
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Specifications are subject to change without notice.
Features
■
■
■
■
Bushing mount
Optional AR pin feature
Non-standard features and specifications
available
Gangable
3543/3545 - Precision Potentiometer
3543
3-Turn
3545
5-Turn
3543S-1/3545S-1
18.3
(.72)
Electrical Characteristics1
Standard Resistance Range ..........20 to 50K ohms......................50 to 50K ohms
Resistance Tolerance......................±5% ......................................±5%
Independent Linearity ....................±0.25% ..................................±0.25%
Resolution ......................................See recommended part numbers See recommended part numbers
Effective Electrical Angle ................1080° +10°, -0° ......................1800° +10°, -0°
Absolute Minimum Resistance/......1 ohm or 0.1% maximum ......1 ohm or 0.1% maximum
Minimum Voltage
(whichever is greater)
(whichever is greater)
Noise ..............................................100 ohms ENR maximum ......100 ohms ENR maximum
Power Rating (Voltage Limited
By Power Dissipation or
224 VAC [3543] or 273 VAC
[3545], Whichever Is Less)
+70°C ..........................................1 watt ....................................1.5 watt
+125°C ........................................0 watt ....................................0 watt
Dielectric Withstanding Voltage......MIL-STD-202, Method 301 ....MIL-STD-202, Method 301
Sea Level ....................................1,000 VAC minimum ..............1,000 VAC minimum
Insulation Resistance
(500 VDC) ....................................1,000 megohms minimum ....1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temp Range......-55°C to +125°C ....................-55°C to +125°C
Dynamic Temp Range..................+1°C to +125°C......................+1°C to +125°C
Temperature Coefficient2 ..............±50ppm/°C maximum/unit ....±50ppm/°C maximum/unit
Vibration..........................................15G ........................................15G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Shock..............................................50G ........................................50G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Load Life ........................................1,000 hours, 1 watt ................1,000 hours, 1.5 watts
Total Resistance Shift ..................±2% maximum ......................±2% maximum
Rotational Life (No Load) ................300,000 shaft revolutions ......500,000 shaft revolutions
Total Resistance Shift ..................±5% maximum ......................±5% maximum
Moisture Resistance ......................MIL-STD-202, Method 103, ..MIL-STD-202, Method 103,
Condition B
Condition B
Total Resistance Shift ..................±2% maximum ......................±2% maximum
14.35 ± .38
(.565 ± .015)
5.72 ± .38
(.225 ± .015)
10.31+ .00/ - .05
DIA.
(.406+.000/-.002)
1
3
3/8" 32-UNEF-2ATHD
2
.25
X 45° CHAMFER
(.010)
ADJUSTMENT
.81
SLOT
WIDE
(.032)
.81±.25
X
DEEP
(.032±.0160)
1.52
(.06)
7.92 ± .38
(.312 ± .015)
19.05 ± .38
(.750 ± .015)
6.342 + .000/ - .008
(.2497+.0000/-.0003)
DIA.
20.62 ± .79
(.812 ± .031)
NOTE: LOCKWASHER AND MOUNTING NUTS SUPPLIED.
ADD .75 (19MM) FOR ADDITIONAL CUPS.
OPTIONAL ANTIROTATION LUG
(-91) 1.42 X .50 ON 7.4 RADIUS
(.056 X .02)
(.29)
LENGTH 1.27 FROM MOUNTING SURFACE.
(SUGGESTED PANEL HOLE 1.6 DIA.)
(.063)
30°
± 5°
6.35
(.25)
15.88
R MAX.
(.625)
12.45
(.49)
Mechanical Characteristics1
Mechanical Angle ..........................1080° +10°, -0° ......................1800° +10°, -0°
Shaft Runout ..................................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Lateral Runout ................................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Pilot Diameter Runout ....................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Shaft End Play ................................0.010 in. (0.25mm) T.I.R. ........0.010 in. (0.25mm) T.I.R.
Shaft Radial Play ............................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Stop Strength ................................75 oz.-in. (53 Ncm) min. ........75 oz.-in. (53 Ncm) min.
Torque (Starting & Running)............0.5 oz.-in. (0.35 Ncm) max. ..0.5 oz.-in. (0.35 Ncm) max.
Weight ............................................Approximately 21G ................Approximately 21G
Terminals ........................................Gold-plated solder lugs ........Gold-plated solder lugs
Backlash ........................................1.0° maximum ........................1.0° maximum
Ganging ..........................................2 cups maximum....................2 cups maximum
22.23 ± .38
(.875 ± .015)
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details.
MTG. FACE
15.88 DIA. MIN.
(.625)
WIPER
3
1
CW
CLOCKWISE
2
Recommended Part Numbers
Part Number*
Resistance
(Ω)
Resolution
(%)
3543S-1-102
3543S-1-202
3543S-1-502
3543S-1-103
1,000
2,000
5,000
10,000
.063
.062
.047
.040
Specifications are subject to change without notice.
Part Number
3545S-1-102
3545S-1-202
3545S-1-502
3545S-1-103
Resistance
(Ω)
1,000
2,000
5,000
10,000
Resolution
(%)
.043
.036
.038
.027
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
263
Features
■
■
■
■
■
■
Bushing mount
Optional AR pin feature
Plastic or metal shaft and bushings
Wirewound
Solder lugs or PC pins
Sealable (Full body seal)
■
Non-standard features and specifications
available
3590 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range .................................................................200 to 100K ohms
Resistance Tolerance..................................................................................................±5%
Independent Linearity ............................................................................................±0.25%
Resolution......................................................................See recommended part numbers
Effective Electrical Angle ...........................................................................3600° +10°, -0°
Absolute Minimum Resistance ...............1 ohm or 0.1% maximum (whichever is greater)
Noise .........................................................................................100 ohms ENR maximum
Power Rating (Voltage Limited By Power
Dissipation or 450 VAC, Whichever is Less)
+40°C ...................................................................................................................2 watts
+125°C ...................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................2,000 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range....................................................-55°C to +125°C
Dynamic Operation Temperature Range ................................................+1°C to +125°C
Temperature Coefficient2 .........................................................±50ppm/°C maximum/unit
Vibration.......................................................................................................................15G
Wiper Bounce .........................................................................0.1 millisecond maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Load Life ............................................................................................1,000 hours, 2 watts
Total Resistance Shift ..............................................................................±2% maximum
Rotational Life (No Load) ........................................................1,000,000 shaft revolutions
Total Resistance Shift ..............................................................................±5% maximum
Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B
Total Resistance Shift ..............................................................................±2% maximum
Mechanical Characteristics
Mechanical Angle ......................................................................................3600° +10°, -0°
Shaft Runout................................................................................0.005 in. (0.13mm) T.I.R.
Lateral Runout .............................................................................0.008 in. (0.20mm) T.I.R.
Pilot Diameter Runout .................................................................0.003 in. (0.08mm) T.I.R.
Shaft End Play .............................................................................0.010 in. (0.25mm) T.I.R.
Shaft Radial Play .........................................................................0.005 in. (0.13mm) T.I.R.
Stop Strength .......................................................................64 oz.-in. (45 Ncm) minimum
Torque (Starting & Running) ...........................0.5 oz.-in. (0.40 Ncm) maximum (unsealed)
1.5 oz.-in. (1.1 Ncm) maximum (sealed)
Mounting Torque .......................................................5-7 in.-lbs. (0.55 - 0.80 Nm) (plastic)
15-18 in.-lbs. (1.7 - 2 Nm) (metal)
Backlash......................................................................................................1.0° maximum
Terminals ........................................................................................Solder lugs or PC pins
Weight..................................................................................................Approximately 19G
5.08 ± .38
(.200 ± .015)
5.08 ± .38
(.200 ± .015)
6.99 ± .38
(.275 ± .015)
1
10.31 + .00/- .13
(.406+.000/-.005)
BUSHING DIAMETER
(SEE PART NUMBERS)
.81
(.032)
3
2
SHAFT DIAMETER
(SEE PART NUMBERS)
.25
(.010)
1.19 (PLASTIC VERSIONS)
(.047)
.81 ± .25
(METAL VERSIONS)
(.032 ± .010)
7.92
(.312)
20.62 ± .81
(.812 ± .032)
18.6 ± .4
(.732 ± .015)
12.2
(.48)
STANDOFFS
15.54
R
(.612)
11.81
(.465)
12.70
DIA.
(.500)
MOUNTING SURFACE
22 ± .38 DIA.
(.875 ±.015)
RECOMMENDED PC BOARD MOUNTING HOLE LOCATIONS
HOLE DIAMETER
FMS
2.08
(.082)
CCW
CW
2
1
1
NOTE: For Anti-Rotation pin add 91 after configuration dash number. Example: -2 becomes -291 to add AR pin.
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
2
Consult manufacturer for complete specification details for resistance below 1K ohms.
Recommended Part Numbers
(Printed Circuit)
(Solder Lug)
Resistance
(Ω)
Resolution
(%)
3590P-1-102
3590P-1-202
3590P-1-502
3590P-1-103
3590P-1-203
3590P-1-503
3590P-1-104
3590S-2-102
3590S-2-202
3590S-2-502
3590S-2-103
3590S-2-203
3590S-2-503
3590S-2-104
1,000
2,000
5,000
10,000
20,000
50,000
100,000
.029
.023
.025
.020
.016
.013
.009
264
3
CW
5.08 5.08 6.99
(.200) (.200) (.275)
TOLERANCES: EXCEPT WHERE NOTED
.51
.13
DECIMALS: .XX ±
.XXX ±
(.02),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
SHAFT & BUSHING CONFIGURATIONS
(Bushing - DxL, Shaft - D)
(-1) Plastic Bushing (3/8” x 5/16”)
and Shaft (.2480 + .001, - .002)
(-2) Metal Bushing (3/8” x 5/16”)
and Shaft (.2497 + .0000, - .0009)
(-3) Sealed, Plastic Bushing (3/8” x 5/16”)
and Shaft (.2480 + .001, - .002)
(-4) Sealed, Metal Bushing (3/8” x 5/16”)
and Shaft (.2497 + .0000, - .0009)
(-5) Metric, Plastic Bushing (9mm x 7.94mm)
and Shaft (6mm + 0, - .076mm)
(-6) Metric, Metal Bushing (9mm x 7.94mm)
and Shaft (6mm + 0, - .023mm)
(-7) Metric, Sealed, Plastic Bushing (9mm x
7.94mm) and Shaft (6mm + 0, - .076mm)
(-8) Metric, Sealed, Metal Bushing (9mm x
7.94mm) and Shaft (6mm + 0, - .023mm)
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Specifications are subject to change without notice.
Features
■
■
■
■
■
■
Infinite resolution element
Standard linearity: 1.0%
Extended temperature range:-65°C to
+125°C
Extended life version (6538)
Output smoothness: 0.1% standard
■
Molded-in rear terminals
Non-standard features and specifications
available
6537/6538 - 22mm Precision Potentiometer
Electrical Characteristics1
6537
6538
Standard Resistance Range..........1K to 100K ohms ...................1K to 100K ohms
Resistance Tolerance ....................±10%......................................±10%
Independent Linearity....................±1%........................................±1%
Resolution .....................................Essentially infinite...................Essentially infinite
Effective Electrical Angle ...............340° +3° .................................340° +3°
End Voltage ...................................0.5% max ...............................0.5% max
Output Smoothness ......................0.1%.......................................0.1%
Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less)
+70°C..........................................1 watt .....................................1 watt
+125°C........................................0 watt .....................................0 watt
Dielectric Withstanding
Voltage.................................................MIL-STD-202, Method 301 .........MIL-STD-202, Method 301
Sea Level ....................................750 VAC min...........................750 VAC min.
Insulation Resistance
(500 VDC)....................................500 megohms min. ................1,000 megohms min.
Environmental Characteristics
Operating Temperature
Static Operation Temp Range.....-65°C to +125°C ....................-65°C to +125°C
Dynamic Temp Range .................+1°C to +125°C......................+1°C to +125°C
Temperature Coefficient ...............±500ppm/°C max...................±500ppm/°C max
Moisture Resistance ............................MIL-STD-202, Method 106 .........MIL-STD-202, Method 106
Total Resistance Shift..................±10% max..............................±10% max
Vibration.........................................15G ........................................15G
Wiper Bounce .............................0.1 millisecond max ...............0.1 millisecond max
Total Resistance Shift..................±5% max................................±5% max
Voltage Ratio Shift.......................±0.5% max.............................±0.5% max
Shock.............................................50G ........................................50G
Wiper Bounce .............................0.1 millisecond max ...............0.1 millisecond max
Total Resistance Shift..................±5% max................................±5% max
Voltage Ratio Shift.......................±0.5% max.............................±0.5% max
Load Life........................................1,000 hours, 1 watt ................1,000 hours, 1 watt
Total Resistance Shift..................±10% max..............................±10% max
Rotational Life (No Load) ...............10,000,000 shaft rev’s............20,000,000 shaft rev’s
Total Resistance Shift..................±10% max..............................±10% max
6537
12.70 ± .38
(.500 ± .015)
1.57
(.062)
1.57
(.062)
1.57
(.062)
3.170+.000/-.008 DIA.
(.1248+.0000/-.0003)
.51
30° ± 10° x
CHAMFER
(.020)
22.23
(.875)
DIA.
.51
REF.
(.020)
19.050+.000/-.012
(.75+.0000/-.0005)
DIA.
3.18
(.125)
12.70 ± .80 19.81
(.375 ± .031) (.780)
DIA.
1
Mechanical Characteristics1
Mechanical Angle ..........................Continuous.............................Continuous
Backlash ........................................0.1° max.................................0.1° max
Shaft Runout..................................0.005 in. (0.13mm) T.I.R..................0.001 in. (0.025mm) T.I.R.
Shaft End Play ...............................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Shaft Radial Play ...........................0.005 (0.13mm) T.I.R. .............0.003 in. (0.08mm) T.I.R.
Pilot Diameter
Runout ...........................................0.0025 in. (0.06mm) T.I.R..........0.0025 in. (0.06mm) T.I.R.
Lateral Runout.............................0.003 in. (0.08mm) T.I.R. ........0.003 in. (0.08mm) T.I.R.
Torque (Starting & Running)...........0.5 oz.-in. (0.40 Ncm) max. ...0.25 oz.-in. (0.18 Ncm) max.
Terminals........................................Molded-in rear........................Molded-in rear
Resistance
(Ω)
6537S-1-103
10,000
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
30°± 3°
TYP.
6538 BALL BEARING
12.70 ± .38
(.475 ± .015)
1.57
(.062)
1.57
(.062)
1.57
(.062)
.25
45° ± 15° x
(.010)
CHAMFER
22.23
(.875)
DIA.
.51
REF.
(.020)
19.050+.000/-.012
(.75+.0000/-.0005)
DIA.
3.18
(.125)
12.70 ± .38
(.500 ± .031)
19.81
(.780)
DIA.
5.08
R
(.020)
45° ± 5°
Recommended Part Numbers
Part Number
.19
R
(4.80)
Part Number
Resistance
(Ω)
6538S-1-102
6538S-1-202
6538S-1-502
6538S-1-103
1,000
2,000
5,000
10,000
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
.XXX ±
DECIMALS: .XX ±
(.005)
(.010),
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Specifications are subject to change without notice.
265
Features
■
■
■
■
Servo mount style
Shaft supported by front and rear precision ball bearings
Non-standard features and specifications
available
Gangable up to 10 cups
6574 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range ...................................................................1K to 100K ohms
Resistance Tolerance................................................................................................±10%
Independent Linearity ............................................................................................±0.25%
Effective Electrical Angle ......................................................................................350° ±2°
Minimum Voltage..........................0.1% maximum (0.2% at 2K ohms, 0.4% at 1K ohms)
Resolution .............................................................................................Essentially infinite
Power Rating
(Voltage Limited By Power Dissipation or 350 VAC, Whichever is Less)
+70°C ..................................................................................................................2 watts
+125°C ...................................................................................................................0 watt
Output Smoothness...................................................................................................0.1%
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
70,000 Feet ........................................................................................350 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range....................................................-65°C to +125°C
Dynamic Operation Temperature Range ................................................+1°C to +125°C
Temperature Coefficient2 ..............................................................±500ppm/°C maximum
Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B
Total Resistance Shift ............................................................................±10% maximum
Vibration.......................................................................................................................15G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Shock...........................................................................................................................60G
Wiper Bounce .........................................................................0.1 millisecond maximum
Rotational Life (No Load) ......................................................25,000,000 shaft revolutions
Total Resistance Shift ............................................................................±10% maximum
Load Life .........................................................................................1,000 hours, 1.5 watts
Total Resistance Shift ............................................................................±10% maximum
Mechanical Characteristics1
Shaft Runout..............................................................................0.001 in. (0.025mm) T.I.R.
Shaft End Play .............................................................................0.003 in. (0.08mm) T.I.R.
Shaft Radial Play .........................................................................0.003 in. (0.08mm) T.I.R.
Pilot Diameter Runout ...............................................................0.001 in. (0.025mm) T.I.R.
Lateral Runout .............................................................................0.003 in. (0.08mm) T.I.R.
Backlash......................................................................................................0.1° maximum
Mechanical Angle.............................................................................................Continuous
Torque (Starting & Running) ..........................................0.75 oz.-in. (0.53 Ncm) maximum
6.35
MIN.
(.25)
6.34 + .000/- .007
DIA.
(.2497+.0000/-.0003)
.25
X 45°
(.010)
CHAMFER
51.0 +.127/- .25
(2.00 +.005/-.010)
DIA.
47.63 +.000/ - .025
(1.875+.000/-.001)
2.36
(.093)
1.57
(.062)
2.03
MIN.
(.080)
15.24 ± .787
(.600 ± .031)
15.9 ± .80
(5/8 ± 1/32)
1
15°
± 3°
15°
± 3°
3
2
90° MAX.
29.59
MAX.
(1.165)
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX ±
.XXX ±
(.015),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
Recommended Part Numbers
Part Number*
Resistance
(W)
6574S-1-102
6574S-1-502
6574S-1-103
1,000
5,000
10,000
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
266
Specifications are subject to change without notice.
Features
■
■
■
■
Bushing mount
Excellent resolution
High rotational life
Non-standard features and specifications
available
6637 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range....................
..................................1K to 100K ohms
Resistance Tolerance.....................±10%
Independent Linearity ......................±1%
Effective Electrical Angle ...........340° +3°
End Voltage ....................0.5% maximum
Output Smoothness .......0.1% maximum
Resolution ...................Essentially infinite
Power Rating (Voltage Limited
By Power Dissipation or
300 VAC, Whichever is Less)
+70°C ..........................................1 watt
+125°C ........................................0 watt
Dielectric Withstanding Voltage
...................MIL-STD-202, Method 301
Sea Level.................750 VAC minimum
Insulation Resistance
(500 VDC) ....1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temp Range
...................................-65°C to +125°C
Dynamic Temp Range
.....................................+1°C to +125°C
Temperature Coefficient
.........................±500ppm/°C maximum
Moisture Resistance
...................MIL-STD-202, Method 106
Total Resistance Shift
....................................±10% maximum
Vibration............................................15G
Wiper Bounce
.....................0.1 millisecond maximum
Total Resistance Shift ...±5% maximum
Voltage Ratio Shift .....±0.5% maximum
Shock................................................50G
Wiper Bounce
.....................0.1 millisecond maximum
Total Resistance Shift ...±5% maximum
Voltage Ratio Shift .....±0.5% maximum
Rotational Life (No Load)
.................10,000,000 shaft revolutions
Total Resistance Shift
....................................±10% maximum
Load Life...................1,000 hours, 1 watt
Total Resistance Shift .±10% maximum
Mechanical Characteristics1
Mechanical Angle..................Continuous
Backlash...........................0.1º maximum
Shaft Runout
.....................0.001 in. (0.025mm) T.I.R.
Shaft End Play
.......................0.005 in. (0.13mm) T.I.R.
Shaft Radial Play
.......................0.005 in. (0.13mm) T.I.R.
Torque (Starting & Running)
...................0.5 oz.-in. (0.40 Ncm) max.
Recommended Part Numbers
Part Numbers
Resistance
(W)
6637S-1-102
6637S-1-502
6637S-1-103
1,000
5,000
10,000
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
6637
7/8" (22MM) DIA.
UR
BO NS
2
4.83
R
(.19)
CW
3
1.57
11.25 ± .38 (.062)
(.443 ± .015)
22.23
(7/8)
DIA.
3.18
(1/8)
1
30°± 3°
TYP.
10.317 + .000/- .051
DIA.
(.4062+.000/-.002)
3/8-32 UNEF-THD
3.170 + .000/-.008
DIA.
(.1248+.0000/-.0003)
.25
45° X (.010)
CHAMFER
9.53 ± .79
(3/8 ± 1/32)
22.23 ± .79
(7/8 ± 1/32)
SHAFT SLOT
.81
.81
(.032) WIDE X (.032) DEEP
NOTE: SHAFT SUPPORTED BY FRONT SLEEVE BEARING.
FOR OTHER OPTIONS CONSULT FACTORY.
2
CCW
WIPER
3
1
CW
CLOCKWISE
At room ambient: +25°C nominal and 50% relative
humidity nominal, except as noted.
1
Specifications are subject to change without notice.
267
Features
■
■
■
■
■
■
Essentially infinite resolution
Excellent rotational life
High quality, rugged construction
General purpose applications
Non-standard features available
Cost and space saving
6539/6639 - Precision Potentiometer
6539
Servo Mount
6639
Bushing Mount
6539
12.70 ± .38
(.500 ± .015)
1.57
(.062)
Electrical Characteristics1
Standard Resistance Range............1K to 100K ohms....................1K to 100K ohms
Resistance Tolerance
Standard ......................................±15% ......................................±15%
Independent Linearity
Standard ......................................±2.0% ....................................±2.0%
Resolution ......................................Essentially infinite ..................Essentially infinite
Effective Electrical Angle ................340° +3°..................................340° +3°
End Voltage ....................................0.5% maximum ......................0.5% maximum
Output Smoothness ........................0.1% ......................................0.1%
Power Rating (Voltage Limited
By Power Dissipation or
300 VAC, Whichever is Less)
+70°C............................................1.0 watt ..................................1.0 watt
+125°C..........................................0 watt......................................0 watt
Dielectric Withstanding Voltage ......MIL-STD-202, Method 301 ....MIL-STD-202, Method 301
Sea Level ......................................750 VAC minimum ..................750 VAC minimum
Insulation Resistance
(500 VDC)......................................500 megohms minimum ........500 megohms minimum
Environmental Characteristics
Operating Temperature
Static Operation Temp Range ......-65°C to +125°C ....................-65°C to +125°C
Dynamic Temp Range ..................+1°C to +125°C ......................+1°C to +125°C
Vibration ..........................................15G ........................................15G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Shock ..............................................50G ........................................50G
Wiper Bounce ..............................0.1 millisecond maximum ......0.1 millisecond maximum
Rotational Life (No Load) ................10,000,000 shaft ....................10,000,000 shaft
revolutions
revolutions
Total Resistance Shift......................±10% maximum .....................±10% maximum
1.57
(.062)
1.57
(.062)
19.81
(.780)
DIA.
.51
(.020)
REF
12.70 ± .79
(.500 ± .031)
3.18
(.125)
6639
10.317+.000/-.051
DIA.
(.4062+.000/-.002)
11.25 ± .38
(.443±.015)
6.342+.000/-.008
(.2497+.0000/-.0003)
DIA. SHAFT
.51
30° ± 10° ± (.020) CHAMFER
1.19
1.60
SLOT (.047) X (.063)
1.57
(.062)
22.23
(.875)
DIA.
.51
(.020)
REF
9.53 ± .79
(.375 ± .031)
22.23 ± .76
(.875 ± .03)
3/8" - 32 UNEF
Mechanical Characteristics1
Mechanical Angle ............................Continuous, Stops..................Continuous, Stops
(340° +8°, -0°) available
(340º +8º -0º) available
Backlash..........................................0.1º maximum ........................0.1º maximum
Shaft Runout ..................................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Shaft End Play ................................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Shaft Radial Play ............................0.005 in. (0.13mm) T.I.R. ........0.005 in. (0.13mm) T.I.R.
Pilot Diameter
Runout ..........................................0.0025 in. (0.06mm) T.I.R.
Lateral Runout ..............................0.003 in. (0.08mm) T.I.R.
Torque (Starting & Running) ............0.5 oz.-in. (0.40 Ncm) max. ..0.5 oz.-in. (0.40 Ncm) max.
Terminals ........................................Rear Turret Type......................Rear Turret Type
Bearing Type....................................Brass Sleeve ..........................Nickel Plated Brass
Markings..........................................Manufacturer’s name, ............Manufacturer’s name,
part number, resistance
part number, resistance
value and tolerance,
value and tolerance,
linearity tolerance,
linearity tolerance,
wiring diagram and
wiring diagram and
date code.
date code.
3.18
(.125)
65/6639
2
3
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX ±
.XXX ±
(.015)
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
Recommended Part Numbers
6539S-1-102
6539S-1-502
6539S-1-103
1,000
5,000
10,000
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
Part Numbers
Mechanical Stops
6639S-1-102 6639S-301-102
6639S-1-202
6639S-1-502 6639S-301-502
6639S-1-103 6639S-301-103
6639S-1-203
4.83
R
(.182)
1
30°± 3°
TYP.
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Bushing Mount
UR
BO NS
CW
1
Resistance
(Ω)
19.050+ 000/-.012
(.750+.0000/-.0005)
22.23
(.875)
DIA.
1
Part Number
3.170 +.000/-.008
(.1248+.0000/-.0003)
DIA. SHAFT
.51
30° ± 10° x (.020)
CHAMFER
Resistance
2
(Ω)
1,000
2,000
5,000
10,000
20,000
CCW
WIPER
3
1
CW
CLOCKWISE
FOR OTHER OPTIONS CONSULT FACTORY.
268
Specifications are subject to change without notice.
Features
■
■
■
Bushing mount
Shaft supported by front sleeve bearing
Non-standard features and specifications
available
6657 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range ...................................................................1K to 100K ohms
Resistance Tolerance................................................................................................±10%
Independent Linearity .................................................................................................±1%
Resolution .............................................................................................Essentially infinite
Effective Electrical Angle ......................................................................................340° ±3°
End Voltage ...............................................................................................0.5% maximum
Output Smoothness...................................................................................................0.1%
Power Rating (Voltage Limited By
Power Dissipation or 300 VAC, Whichever is Less)
+70°C ...............................................................................................................1.5 watts
+125°C ...................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level............................................................................................750 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range....................................................-65°C to +125°C
Dynamic Operation Temperature Range ................................................+1°C to +125°C
Temperature Coefficient................................................................±500ppm/°C maximum
Vibration.......................................................................................................................15G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±5% maximum
Voltage Ratio Shift ................................................................................±0.5% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±5% maximum
Voltage Ratio Shift ................................................................................±0.5% maximum
Load Life .........................................................................................1,000 hours, 1.5 watts
Total Resistance Shift ............................................................................±10% maximum
Rotational Life (No Load) ......................................................10,000,000 shaft revolutions
Total Resistance Shift ............................................................................±10% maximum
Moisture Resistance................................................................MIL-STD-202, Method 106
Total Resistance Shift ............................................................................±15% maximum
Mechanical Characteristics1
Mechanical Angle.............................................................................................Continuous
Backlash......................................................................................................0.1° maximum
Shaft Runout..............................................................................0.001 in. (0.025mm) T.I.R.
Shaft End Play .............................................................................0.005 in. (0.13mm) T.I.R.
Shaft Radial Play .........................................................................0.005 in. (0.13mm) T.I.R.
Torque (Starting & Running) ............................................0.5 oz.-in. (0.40 Ncm) maximum
1
1.57
(.062)
10.317+.000/-.051
(.4062+.000/-.002)
DIA. SHAFT
16.46 ± .38
(.648 ± .015)
3/8"-32 UNEF-2ATHD
6.345 +.000/-.008
(.2498 +.0000/-.0003)
DIA. SHAFT
.25
45° X (.010)
CHAMFER
33.34
(1-5/16)
DIA.
9.53 ± .79
(3/8± 1/32)
3.18
(1/8)
22.23 ± .79
(7/8 ± 1/32)
SHAFT SLOT
1.19
WIDE
(.047)
1.60
DEEP
X
(.063)
UR
BO NS
2
6.35
R
(.25)
CW
3
1
30°± 3°
TYP.
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
CCW
WIPER
3
1
CW
CLOCKWISE
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Recommended Part Numbers
Part Number*
Resistance
(Ω)
6657S-1-102
6657S-1-202
6657S-1-502
6657S-1-103
1,000
2,000
5,000
10,000
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Specifications are subject to change without notice.
269
Features
■
■
■
■
Bushing mount
Cost saving; pre-phased
Highly readable clockface readout
Easy mounting
3600 - Precision Potentiometer
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range......................................................-65°C to +85°C
Dynamic Operation Temperature Range ..................................................+1°C to +85°C
Temperature Coefficient2 .........................................................±50ppm/°C maximum/unit
Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B
Total Resistance Shift ..............................................................................±2% maximum
Vibration.......................................................................................................................10G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Load Life .........................................................................................1,000 hours, 1.5 watts
Total Resistance Shift ..............................................................................±2% maximum
Rotational Life (No Load)2 .........................................................200,000 shaft revolutions
Total Resistance Shift ..............................................................................±2% maximum
9
K
8
0
BPOT
NO
1
19.10
DIA.
(3/4)
2
®
Electrical Characteristics1
Standard Resistance Range .................................................................100 to 100K ohms
Resistance Tolerance..................................................................................................±5%
Accuracy (Correlation of Dial Readout to Voltage Ratio Output) ........±0.5% voltage ratio
Repeatability of Dial Readout .............................................................±0.1% voltage ratio
Resolution .....................................................................See recommended part numbers
Effective Electrical Angle .............................................................................3600° nominal
Absolute Minimum Resistance ...............1 ohm or 0.1% maximum (whichever is greater)
Noise .........................................................................................100 ohms ENR maximum
Power Rating
(Voltage Limited By Power Dissipation or 385 VAC, Whichever is Less)
+25°C ...............................................................................................................1.5 watts
+85°C .....................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
70,000 Feet ........................................................................................400 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
7
3
6
5
4
8.73
(11/32)
NON-TURN PIN
EXTENDS
1.70 ± .13
(.067 ± .005)
25.40 ± .80
(1.00 ± .03)
19.10
(3/4)
DIA.
PILOT DIA.
10.26 ± .05
(.404 ± .002)
3/8"-32UNEF-2ATHD
3.96
1.52
(.156) MAX. - (.060) MIN.
PANEL THICKNESS
#21 AWG GOLD PLATED GRADE A
.724
NICKEL SOLDER LUGS (.0285) DIA.
LOCATED ON .05 RADIUS
NON-TURN PIN
EXTENDS
1.70 ± .13
(.067 ± .005)
3.18 ± .79
(1/8 ±1/32)
2
1.40 ± .38
(.055 ± .015)
I.D.
3
1
4.76 ± .79
(3/16 ± 1/32)
1.98 + .08/ - .03
DIA.
(.078 +.003/-.001)
7.11
(.280)
10.41 ± .08
(.410 ± .003)
PANEL HOLE PATTERN
Mechanical Characteristics1
Mechanical Angle ......................................................................................3600° +20°, -0°
Stop Strength .......................................................................20 oz.-in. (14 Ncm) minimum
Torque (Starting & Running) ..............................................4.0 oz.-in. (2.8 Ncm) maximum
Variation ........................................................................1.0 oz.-in. (0.71 Ncm) maximum
Backlash......................................................................................................1.0° maximum
Weight..................................................................................................Approximately 17G
Terminals...........................................................................................Gold-plated J-Hooks
Markings ...........Manufacturer’s name and part number, resistance value and date code
LOCKWASHER AND MOUNTING NUT
TO BE SUPPLIED WITH EACH UNIT
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details for resistances below 100 ohms.
2
2
CCW
Recommended Part Numbers
Part Number
3600S-1-102
3600S-1-502
3600S-1-103
270
Resistance
(Ω)
1,000
5,000
10,000
WIPER
3
1
CW
CLOCKWISE
Resolution
(%)
.035
.027
.022
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Specifications are subject to change without notice.
Features
■
■
■
■
Snap-in mounting
Space saving - extends only 5/8” behind
most panels
Easy one-hole, snap-in mounting
Digital dial provides excellent readability
3610 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range .................................................................100 to 100K ohms
Resistance Tolerance..................................................................................................±5%
Accuracy (Correlation of Dial Readout to Voltage Ratio Output) ........±0.5% voltage ratio
Repeatability of Dial Readout .............................................................±0.1% voltage ratio
Resolution .....................................................................See recommended part numbers
Effective Electrical Angle .............................................................................3600° nominal
Absolute Minimum Resistance ...............1 ohm or 0.1% maximum (whichever is greater)
Noise .........................................................................................100 ohms ENR maximum
Power Rating
(Voltage Limited By Power Dissipation or 385 VAC, Whichever is Less)
+25°C ...............................................................................................................1.5 watts
+85°C .....................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
70,000 Feet ........................................................................................400 VAC minimum
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Environmental Characteristics1
Operating Temperature
Static Operation Temperature Range......................................................-25°C to +85°C
Dynamic Operation Temperature Range ..................................................+1°C to +85°C
Temperature Coefficient2 ........................................................±50ppm/°C maximum/wire
Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B
Total Resistance Shift ..............................................................................±2% maximum
Vibration.......................................................................................................................10G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±2% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Load Life .........................................................................................1,000 hours, 1.5 watts
Total Resistance Shift ..............................................................................±2% maximum
Rotational Life (No Load) ............................................................50,000 shaft revolutions
Total Resistance Shift ..............................................................................±2% maximum
PANEL HOLE PATTERN
3.264
(NO. 30 DRILL)
(.1285)
FULL R
14.27
(.562)
12.65
REF.
(.498)
25.40
DIA.
(1.00)
NOTES:
1. SNAP-IN MOUNTING CUP
ACCOMMODATES PANEL THICKNESS
.64
1.98
(.025) THRU (.078) (NO. 22GA
3.18
THRU NO. 14GA) AND (.125)
16.26 ± .38
(.640 ± .015)
18.80 ± .38
(.740 ± .015)
4.76 ± .79
(3/16 ± 1/32)
ANTIROTATION
KEY
22.23
(7/8)
DIA.
#21 AWG GOLD
PLATED PINS
.724
DIA.
(.0285)
LOCATED ON
1.27
RADIUS
(.050)
VIEW ROTATED 45°
ANTIROTATION
KEY
2
31.496
(1.240)
1 3
DIA.
Mechanical Characteristics1
Mechanical Angle ......................................................................................3600° +20°, -0°
Stop Strength .......................................................................20 oz.-in. (14 Ncm) minimum
Torque (Starting & Running) ..............................................4.0 oz.-in. (2.8 Ncm) maximum
Variation ........................................................................1.0 oz.-in. (0.71 Ncm) maximum
Backlash......................................................................................................1.0° maximum
Weight..................................................................................................Approximately 20G
Terminals...........................................................................................Gold-plated J-Hooks
Markings ...........Manufacturer’s name and part number, resistance value and date code
TOLERANCES: EXCEPT WHERE NOTED
.25
.13
DECIMALS: .XX ±
.XXX ±
(.010),
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Consult manufacturer for complete specification details for resistances below 500 ohms and above 100K ohms.
1
2
2
CCW
WIPER
3
1
CW
CLOCKWISE
Recommended Part Numbers
Part Number
3610S-1-102
3610S-1-502
3610S-1-103
Resistance
(W)
1,000
5,000
10,000
Resolution
(%)
.035
.027
.022
Specifications are subject to change without notice.
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
271
Features
■
■
■
■
Repeatable settings
Resolution to 0.001%
Digital display provides excellent readability
Snap-in panel mount
3680 - Precision Potentiometer
Electrical Characteristics1
Standard Resistance Range ..........................................................50 ohms to 1 megohm
Resistance Tolerance..................................................................................................±3%
Absolute Minimum Resistance .............3 ohms or 0.2% maximum (whichever is greater)
Resolution
3682............................................................................................................................1%
3683.........................................................................................................................0.1%
Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum
Power Rating
(Voltage Limited By Power Dissipation or 500 VAC, Whichever is Less)
+25°C ..................................................................................................................2 watts
+85°C .....................................................................................................................0 watt
Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301
Sea Level.........................................................................................1,000 VAC minimum
Accuracy (Dial Reading to Output Ratio)..................................................±0.5% full scale
3680
a
1
2
3
3
2
1
Environmental Characteristics
Operating Temperature Range ..................................................................-25°C to +85°C
Temperature Coefficient ...............................................................±100ppm/°C maximum
Vibration.......................................................................................................................10G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±1% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Shock...........................................................................................................................50G
Wiper Bounce .........................................................................0.1 millisecond maximum
Total Resistance Shift ..............................................................................±1% maximum
Voltage Ratio Shift ................................................................................±0.2% maximum
Load Life ............................................................................................1,000 hours, 2 watts
Total Resistance Shift ..............................................................................±2% maximum
1
c
Mechanical Characteristics1
Expected Life .......................................................75,000 button operations each decade
Total Resistance Shift ..............................................................................±2% maximum
Terminals.................................................0.11 in. (2.79mm) wide x .016 in. (.41mm) thick,
tinned solder lugs for 3 #20 AWG wires
Readout Marking .....................................................................................10 positions, 0-9
Markings ...........Manufacturer’s name and part number, resistance value and date code
Dimensions
3682
3683
7.77 ± .38
(.306 ± .015)
7.87
(.31)
e
23.62
(.93)
20.57
(.810)
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
NOTE: Terminals 1 & 3 are reversed from illustration for models 3682 and 3684.
1
Model
d
b
Weight (Approx.)
a
b
c
d
e ±.015 (±.381)
oz.
gms.
26.67 (1.050)
37.08 (1.460)
25.15 (.990)
35.31 (1.390)
10.67 (.420)
18.54 (.730)
11.94 (.47)
11.94 (.47)
8.38 (.330)
4.19 (.165)
.576
.824
16.5
23.5
8.38 ± .38
(.33 ± .015)
PANEL
.81
(.032)
3.18
MAX.
(.125)
MIN.
3.18
(.125)
26.67
(1.050)
Model
3682
3683
Dimensions
f ±.010 (±.254)
g ±.010 (±.254)
21.08 (.830)
21.08 (.830)
25.91 (1.020)
36.07 (1.420)
Recommended Part Numbers
Resistance
(Ω)
1,000
5,000
10K
50K
100K
3682S-1
2
Decade
3683S-1
3
Decade
-102
-502
-103
-102
-502
-103
-503
-104
RECOMMENDED
PANEL CUTOUT
g
f
.030
R MAX.
(.76)
TOLERANCES: EXCEPT WHERE NOTED
.38
.13
DECIMALS: .XX ±
.XXX ±
(.015)
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
2
WIPER
3
1
INCR.
BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
272
Specifications are subject to change without notice.
Features
■
For use with Model 3680 digital pushbutton precision potentiometer
H-385 - Panel Seal Assembly
Physical Characteristics1
Material (Boot) ...................................................................................Clear silicone rubber
Material (Frame) ....................................................................................Rigid black plastic
Expected Life .......................................................................100,000 actuations minimum
Weight
H-385-2..........................................................................................Approximately 8.50G
H-385-3..........................................................................................Approximately 9.92G
Application Data
• Protects front of the pot from unwanted entry of rain, dust, grease or oils
• Transparent for easy viewing of numerals
• Tear resistant for long life
• Matte finish black plastic frame to complement most front panels
H-385 MOUNTING INSTRUCTIONS
1. Cut out and drill panel1 per chart.
2. Install snap-in potentiometer2.
3. Locate silicone boot3 and frame4
over potentiometer and holes.
4. Attach panel seal assembly to panel
with two #6 screws (not supplied).
1
2
3
4
Bourns® Model H-385 Panel Seal Assembly minimizes accidental entry of liquids or
foreign matter through the front of the Model 3680 Family Potentiometer.
PANEL CUT-OUT/HOLE DIMENSIONS
RECOMMENDED HOLE FOR TWO #6 SCREWS
(NOT SUPPLIED)
10.54 ± .13
(.415 ± .005)
.25
"C" ± (.010)
21.08 ± .25
(.830 ± .010)
.25
"A" ± (.010)
41.40 ± .38
(1.63 ± .015)
6.73 ± .13
(.265 ± .005)
.25
"B" ± (.010)
For Use With
Part Number
3682
3683
H-385-2
H-385-3
Frame
Dimensions
“C”
50.60 (1.992)
60.76 (2.392)
Panel Cutout/
Hole Dimensions
“A”
“B”
25.91 (1.020)
39.37 (1.550)
36.07 (1.420)
49.53 (1.950)
1
At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.
Specifications are subject to change without notice.
273
Definitions and Test Procedures
Cermet Elements
Cermet elements are available in a
wide range of resistance values and tapers.
They offer essentially infinite resolution
and excellent stability in the most severe
environmental conditions. Static and
dynamic noise (CRV) performance is good
but not as good as that of conductive
plastic.
The temperature coefficient of cermet
elements, though not as good as wirewound elements, is better than conductive
plastic or carbon type elements. Linearity
is quite good for a film type element and
can be improved considerably for greater
dial setting accuracy by laser tailoring.
Frequency response of cermet materials
is very good and the practical application
range extends well beyond 100 MHZ.
Conductive Plastic Elements
Conductive plastic is a thick film ink,
similar to cermet, but has a smoother surface. This characteristic offers several
operational advantages over cermet.
Dynamic noise characteristics (CRV or
output smoothness) and rotational life are
measurably improved as a result of the
surface smoothness. Resolution is essentially infinite.
Conductive plastic elements are generally available in a wide range of resistance
values and tapers.
Moisture resistance, temperature coefficient, power dissipation and wiper current capacity for conductive plastic elements are not as good as cermet elements.
Wirewound Elements
Wirewound elements offer good stability, excellent linearity, low noise, high
power capabilities and good o perational
life.
Wirewound elements offer a wide
selection of resistance values up to 500k
ohms.
One primary limitation of wirewound
elements is the finite resolution steps,
which result from the wiper moving from
turn to turn. (These steps are distinct, sudden, repeatable changes in output.)
Resolution improves as resistance values
increase due to the manufacturing
processes whereby smaller wire and a
higher number of turns are utilized.
In systems that might be sensitive to
such discrete steps, care should be taken
to select an element with resolution fine
enough to avoid difficulty.
274
The many turns of resistance wire
exhibit an inductive reactance that
increases directly with frequency. This
effect is most noticeable in low total resistance elements because the inductive
reactance can be larger than the resistance,
even at frequencies as low as 20KHZ.
The performance of wirewound
elements is also affected by inherent
capacitance. Capacitance exists from turn
to turn and also between the winding and
the mandrel. Capacitance effects are most
significant in high total resistance elements.
Hybritron® Elements
This element is a combination of a
wirewound element with a conductive
plastic coating. It exhibits the temperature
coefficient and resistance stability
approaching a pure wirewound element. It
displays the long operational life, essentially infinite resolution and low noise
characteristics of the pure conductive
plastic elements. The combination of the
two provides the major benefits of both
types of elements. Not recommended in
applications requiring high wiper currents.
CAUTION: CONDUCTIVE PLASTIC AND
HYBRITRON® ELEMENTS SHOULD BE
APPLIED IN VOLTAGE DIVIDER CIRCUITS
ONLY.
Absolute Minimum Resistance
DEFINITION
The resistance measured between the
wiper terminal and either end terminal
when the wiper is positioned to give a
minimum value on the measuring device.
TEST PROCEDURE
The wiper shall be positioned at one
end of the resistance element so that a
minimum value of resistance shall be
measured as specified between the wiper
and the corresponding end terminal. The
same procedure shall be followed for the
opposite end of the resistance element.
Contact Resistance Variation (CRV)
DEFINITION
The apparent resistance seen between
the wiper and the resistance element
when the wiper is energized with a specified current and moved over the adjustment travel in either direction at a constant speed. The output variations are
measured over a specified frequency
bandwidth, exclusive of the effects due to
roll-on or roll-off of the terminations and
expressed in ohms or percent of total
resistance test procedure
CRV shall be tested using the circuit
as shown in Fig. 1 on page 253 of
Potentiometer Handbook (or its equivalent). The operating shaft shall be rotated
in both directions through 90% of the
adjustment travel for a total of 6 cycles.
Only the last 3 cycles shall count in determining whether or not a contact resistance variation is observed at least twice
in the same area (within 5%), exclusive of
the roll-on or roll-off points where the
wiper moves from the termination, on or
off, the resistance element. The rate of
rotation of the operating shaft shall be
such that the wiper completes 1 cycle in 5
seconds, minimum, to 2 minutes, maximum. The test current used shall be in
accordance with the table below, unless
otherwise specified.
Test
Current
(±20%) Total Resistance Range
30 ma
10 ma
1 ma
100 ua
50 ua
50 Ohms
= or >50 Ohms to <500 Ohms
= or >500 Ohms to <100K Ohms
= or >100K Ohms to <2 Megohms
= or >2 Megohms
Dielectric Withstanding Voltage
DEFINITION
The ability to withstand under prescribed conditions, a specified potential
of a given characteristic between the terminals of each cup and exposed conducting surface of the potentiometer, or
between the terminals of each cup and
the terminals of every other cup in the
assembly without exceeding a specified
leakage current value.
TEST PROCEDURE
The magnitude of the test voltage shall
be specified. Connect the equipment by
applying the high voltage source between
the potentiometer terminals (interconnected) and the shaft or case. Raise the test
voltage from zero to the proper maximum
value at a rate of 500 volts per second
maximum. Maintain the test voltage at this
level while operating the shaft through
one full sweep of its mechanical travel in
a time interval of not less than 5 seconds
nor more than 60 seconds. Monitor the
Specifications are subject to change without notice.
Definitions and Test Procedures
leakage current indicating device throughout this test for evidence of damage, arcing, breakdown, or leakage current in
excess of 1 milliampere. Upon completion
of the test, prior to disconnecting the
leads, gradually reduce the test voltage to
zero.
For ganged potentiometers, repeat the
foregoing applying the high voltage
between the terminals of each cup and
the terminals of every other cup on the
potentiometer under test.
Equivalent Noise Resistance (ENR)
DEFINITION
Any spurious variation in the electrical
output not present in the input, defined
quantitatively in terms of an equivalent
parasitic transient resistance in ohms,
appearing between the contact and the
resistance element when the shaft is
rotated or translated. The equivalent noise
resistance is defined independently of the
resolution, the functional characteristics,
and the total travel. The magnitude of the
equivalent noise resistance is the maximum departure from a specified reference
line. The wiper of the potentiometer is
required to be excited by a specified current and moved at a specified speed.
TEST PROCEDURE
The potentiometer shaft is cycled not
less than ten times over a minimum of
95% of the electrical continuity travel
within the rated travel speed of the potentiometer just prior to making noise measurements. The potentiometer shaft is
then connected mechanically to the constant speed drive and electrically
connected to the test circuit. With the
constant speed drive engaged, the potentiometer noise characteristic may then be
noted on the oscilloscope as the wiper
traverses one complete cycle over the full
electrical continuity travel and the maximum values are compared to the specified limit.
If only random spikes of noise are
noted, the potentiometer should be
cycled again. If the random spikes are
repetitive, the maximum values should be
noted. Otherwise do not consider the initial measurements as noise.
Specifications are subject to change without notice.
Independent Linearity
DEFINITION
The maximum deviation expressed as
a percent of the total applied voltage, of
the actual function characteristic from a
straight line whose slope and position
minimize the maximum deviations over
the actual electrical travel, or any specified portion thereof.
TEST PROCEDURE
Consult factory.
Insulation Resistance
DEFINITION
The resistance to a specified
impressed DC voltage between the terminals of each cup and the exposed conducting surfaces of the potentiometer, or
between the terminals of each cup and
the terminals of every other cup in the
gang, under prescribed conditions.
TEST PROCEDURE
Interconnect all electrically insulated
terminals of each cup of the potentiometer. Connect the insulation resistance test
set to the terminal of the first cup and to
some exposed conducting surface (shaft,
housing, etc.) and apply the specified test
voltage. Unless otherwise specified the
test voltage shall be 500 VDC. Maintain
the test voltage at this level for 5 to 10
seconds before initiating movement of
the shaft through one full sweep of the
total mechanical travel in a time interval
of not less than 5 seconds nor more than
60 seconds. Monitor the indicated insulation resistance during this voltage application, the insulation resistance is the
minimum value observed during the
movement of the shaft.
For ganged potentiometers, repeat the
procedure for each cup applying the high
voltage between the terminal of each cup
and the exposed conducting surface of
the potentiometer.
Output Smoothness
DEFINITION
The spurious variations in the electrical output not present in the input. They
are measured for specified travel increments over the theoretical electrical travel
and expressed as a percentage of the
total applied voltage.
TEST PROCEDURE
Mount the potentiometer in the constant-speed drive (4 RPM) and excite it
with the power supply. Connect the wiper
and the power common lead to the input
of the filter and the output of the filter to
the oscilloscope. When a load is specified
for a conformity test, use that load for the
output smoothness test. When no load is
specified for the conformity test, apply a
load equal to 100 times the nominal resistance value of the potentiometer under
test between the wiper and the CCW end
(unless otherwise specified).
The output smoothness is the largest
excursion voltage occurring over one
specified travel increment, divided by the
total applied voltage. Unless otherwise
specified, the travel increment is 1% of
the theoretical electrical travel.
Excursions occurring at the point of
abrupt changes in input slope (start, end,
and reversal) are not considered output
smoothness faults.
Power Rating
DEFINITION
The maximum power, in watts, that a
potentiometer can dissipate across the
entire resistive element under specified
conditions while meeting specified operating performance requirements.
Resolution
DEFINITION
A measure of the sensitivity to which
the output of a potentiometer may be set.
(Applicable to wirewound potentiometers
only.)
Theoretical resolution; the reciprocal of
the number of turns of wire in the resistance winding in the actual electrical travel, expressed as a percentage.
Travel resolution; the maximum value
of shaft travel (in degrees for rotary
devices) in one direction per incremental
voltage stop in any specified portion of
the resistance element.
Voltage resolution; the maximum
incremental change in output ratio with
shaft travel in one direction in any specified portion of the resistance element.
TEST PROCEDURE
Consult factory.
275
Definitions and Test Procedures
Temperature Coefficient of Resistance
DEFINITION
The unit change in resistance per
degree Celsius change from a reference
temperature, expressed in parts per million per degree Celsius using the following
formula:
TC = [(R1-R2)/R1(T2-T1)] x 106
WHERE: R1 = Resistance at reference
temperature in ohms
R2 = Resistance at test
temperature in ohms
T1 = Reference temperature
in degrees Celsius
T2 = Test temperature in
degrees Celsius
TEST PROCEDURE
Position the wiper of the potentiometer
to be tested off of the actual electrical
travel or at a point to minimize the total
resistance if no over travel exists. Subject
the potentiometer to the specified test
temperature(s). The total resistance is
measured after temperature chamber has
been stabilized for the test temperature
for a minimum of 30 minutes (avoid over
aging). The reference temperature of 25
degree Celsius shall be used for all elevated and reduced temperatures. Calculate
the (TC) by inserting the appropriate data
into the above formula and comparing the
result to the specification.
Total Resistance
DEFINITION
The DC resistance between the end
terminals of a potentiometer with the shaft
positioned so as to give a maximum
resistance value.
TEST PROCEDURE
With the VOM or DVM device (10ma
maximum current) connected between
the wiper and one end terminal, position
the wiper onto the electrical overtravel.
Reconnect the test leads of the measuring device to the end terminals of the
potentiometer under test, the reading
observed is the total resistance of the
potentiometer.
276
Specifications are subject to change without notice.