6539

PL
IA
N
T
Features
CO
M
■ Essentially infinite resolution
*R
oH
S
■ Excellent rotational life
■ High quality, rugged construction
■ General purpose applications
■ Non-standard features available
■ Cost and space saving
6539/6639 - Precision Potentiometer
Electrical Characteristics1
6539 Servo Mount
6639 Bushing Mount
Standard Resistance Range................ 1 K to 100 K ohms......................1 K to 100 K ohms
Total Resistance Tolerance.................. ±15 % .........................................±15 %
Independent Linearity .......................... ±2.0 % ........................................±2.0 %
Effective Electrical Angle ..................... 340 ° +3 ° ...................................340 ° +3 °
End Voltage ......................................... 0.5 % maximum .........................0.5 % maximum
Output Smoothness ............................. 0.1 % ..........................................0.1 %
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ......................................... 750 VAC minimum .....................750 VAC minimum
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
Insulation Resistance (500 VDC) ........ 500 megohms minimum .............500 megohms minimum
Resolution............................................ Essentially infinite.......................Essentially infinite
Product Dimensions
6539
12.70 ± .38
(.500 ± .015)
1.57
(.062)
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
.25
45° ± 5 ° x (.010) CHAMFER
1.19
1.60
SLOT (.047) X (.063)
1.57
(.062)
22.23
(.875)
DIA.
.25
(.010)
REF
9.53 ± .79
(.375 ± .031)
22.23 ± .76
(.875 ± .03)
Mechanical Characteristics1
Mechanical Angle ..........................................................Continuous, Stops (340 ° +8 °, -0 °) available
Stop Strength (applies to -301 with mechanical stops only) ..................................22.6 N-cm (2 lb.-in.)
Torque (Starting & Running)2 ...................................................................0.40 N-cm (0.5 oz.-in.) max.
Mounting ..............................................................................170-200 N-cm (15-18 lb.-in.) maximum
Shaft Runout.................................................................................................0.13 mm (0.005 in.) T.I.R.
Lateral Runout ..............................................................................................0.08 mm (0.003 in.) T.I.R.
Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R.
Shaft Radial Play ..........................................................................................0.13 mm (0.005 in.) T.I.R.
Pilot Diameter Runout ................................................................................0.06 mm (0.0025 in.) T.I.R.
Backlash ....................................................................................................................... 0.1 º maximum
Weight ....................................................... 18 gm (6539 Servo Mount), 24 gm (6639 Bushing Mount)
Terminals ................................................................................................................... Rear Turret Type
Soldering Condition
Manual Soldering .................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire
370 °C (700 °F) max. for 3 seconds
Wave Soldering ........................................................ 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux
260 °C (500 °F) max. for 5 seconds
Wash processes ..................................................................................................Not recommended
Marking ................................................. Manufacturer’s name and part number, resistance value and
tolerance, linearity tolerance, wiring diagram, and date code.
Ganging (Multiple Section Pots) .................................................................................. 1 cup maximum
Hardware (6639 only) ................................. One lockwasher (H-37-2) and one mounting nut (H-38-2)
is shipped with potentiometer.
19.050+ 000/-.012
(.750+.0000/-.0005)
22.23
(.875)
DIA.
Environmental Characteristics1
Operating Temperature Range ............ +1 °C to +125 °C ........................-40 °C to +125 °C
Storage Temperature Range ............... -65 °C to +125 °C .......................-65 °C to +125 °C
Temperature Coefficient
Over Storage Temperature Range ...... ±500 ppm/°C maximum..............±500 ppm/°C maximum
Vibration .............................................. 15 G ...........................................15 G
Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum
Total Resistance Shift ...................... ±10 % .........................................±10 %
Voltage Ratio Shift ........................... ±0.5 % ........................................±0.5 %
Shock................................................... 50 G ...........................................50 G
Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum
Total Resistance Shift ...................... ±5 % ...........................................±5 %
Voltage Ratio Shift ........................... ±0.5 % ........................................±0.5 %
Load Life .............................................. 1,000 hours, 1 watt.....................1,000 hours, 1 watt
Total Resistance Shift ...................... ±10 % .........................................±10 %
Rotational Life (No Load)..................... 10,000,000 shaft revolutions ......10,000,000 shaft revolutions
Total Resistance Shift ...................... ±10 % maximum ........................±10 % maximum
Moisture Resistance (MIL-STD-202, Method 106)
Total Resistance Shift ...................... ±15 % .........................................±15 %
IP Rating .............................................. IP 40 ...........................................IP 40
3.170 +.000/-.008
(.1248+.0000/-.0003)
DIA. SHAFT
.25
45° ± 5 ° x (.010)
CHAMFER
3/8 " - 32 UNEF
3.18
(.125)
65/6639
UR
BO NS
2
4.83
R
(.19)
CW
3
1
30 °±3 °
TYP.
TOLERANCES: EXCEPT WHERE NOTED
.51
.13
DECIMALS: .XX ±
.XXX ±
(.020)
(.005)
FRACTIONS: ±1/64
MM
DIMENSIONS:
(IN.)
1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
22.82 N-cm (4.0 oz.-in.) max. at -40 °C.
2
CCW
WIPER
3
1
CLOCKWISE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
CW
6539/6639 - Precision Potentiometer
Recommended Part Numbers
Part Number
6539S-1-102
6539S-1-502
6539S-1-103
Resistance (Ω)
1,000
5,000
10,000
Part Numbers
Continuous Turn 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
Resistance (Ω)
1,000
2,000
5,000
10,000
20,000
BOLDFACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.
FOR OTHER OPTIONS CONSULT FACTORY.
Panel Thickness Dimensions
(For Bushing Mount Only)
2.46 - 3.81
(.097 - .150)
PANEL
HEX NUT
10.44 ± .07
DIA.
(.411 ± .003)
LOCKWASHER
POT
Panel thickness and hole diameters are
recommended for best fit. However, customers
may adjust the dimensions to suit their specific
application.
DIMENSIONS:
MM
(INCHES)
TOLERANCES: ±
0.127
(.005)
REV. 02/15
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
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