3862

T
PL
IA
N
M
CO
*R
oH
S
Features
■ Small diameter
■ Wide resistance range
■ Good resolution
■ Linear tapers
■ Cermet element
3862 - 1/2 ” Diameter Single-Turn Panel Control
Initial Electrical Characteristics1
Standard Resistance Range .................................................................................................................................................. 1K ohms to 1 megohm
Total Resistance Tolerance ............................................................................................................................................................... (A Taper) ±10 %
(H Taper) ±5%
Independent Linearity ........................................................................................................................................................................................ ±5 %
Absolute Minimum Resistance ...................................................................................................................................................... 2 ohms maximum
Effective Electrical Angle .......................................................................................................................................................................... 260 ° ±10 °
Contact Resistance Variation ........................................................................................................................ ±3 % or 6 ohms (whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ................................................................................................................................................................................ 750 VAC minimum
70,000 Feet............................................................................................................................................................................. 350 VAC minimum
Insulation Resistance (500 VDC) ...................................................................................................................................... 1,000 megohms minimum
Power Rating (Voltage Limited by Power Dissipation or 350 VAC, Whichever is Less)
+70 °C......................................................................................................................................................................................................... 1 watt
+125 °C....................................................................................................................................................................................................... 0 watt
Theoretical Resolution ................................................................................................................................................................... Essentially infinite
Environmental Characteristics1
Operating Temperature Range ...................................................................................................................................................... -40 °C to +125 °C
Storage Temperature Range ......................................................................................................................................................... -65 °C to +125 °C
Temperature Coefficient Over Storage Temperature Range ................................................................................................................ ±150 ppm/°C
Vibration ............................................................................................................................................................................................................ 20 G
Total Resistance Shift ................................................................................................................................................................. ±2 % maximum
Voltage Ratio Shift ...................................................................................................................................................................... ±6 % maximum
Shock ................................................................................................................................................................................................................. 50 G
Total Resistance Shift ................................................................................................................................................................. ±2 % maximum
Voltage Ratio Shift ...................................................................................................................................................................... ±6 % maximum
Load Life..................................................................................................................................................................................................1,000 hours
Total Resistance Shift ................................................................................................................................................................. ±3 % maximum
Rotational Life, No Load
(C & N Bushings) ............................................................................................................................................................................50,000 cycles
(E & T Bushings) ...............................................................................................................................................................................1,000 cycles
Total Resistance Shift ............................................................................................................................................................ ±5 % maximum
Contact Resistance Variation ............................................................................................................. ±3 % or 6 ohms (whichever is greater)
Moisture Resistance (MIL-STD-202, Method 106, Condition B)
Total Resistance Shift ................................................................................................................................................................. ±2 % maximum
Insulation Resistance (500 VDC) ................................................................................................................................... 100 megohms minimum
Salt Spray ...................................................................................................................................................MIL-STD-202, Method 101, Condition A
IP Rating .............................................................................................................................................................................................................IP 40
Mechanical Characteristics1
Stop Strength ............................................................................................................................................................... 33 N-cm (3 lb.-in.) maximum
Mechanical Angle ....................................................................................................................................................................................... 295 ° ±3 °
Torque
Starting and Running .......................................................................................................................................... 3.53 N-cm (5 oz.-in.) maximum
Mounting (Torque on Bushing)................................................................................................................... 1.7-2.0 N-m (15-18 lb.-in.) maximum
Shaft Locking Torque with Locking Bushings ................................................................................................................. 14.12 N-cm (20 oz.-in.)
Weight (Single Section)............................................................................................................................................................... 25 grams maximum
Terminals ................................................................................................................................................................... Printed circuit pins or J-Hooks
Soldering Condition .................................................... Recommended hand soldering using Sn85/Ag5 no clean solder, 0.025 ” wire diameter
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean flux.
Part can be wave soldered at 260 °C (500 °F) for 5 seconds, no wash process with no clean flux.
Marking.................................................................Manufacturer’s trademark, wiring diagram, date code, resistance, manufacturer’s part number
Ganging ............................................................................................................................................................................................ 1 cup maximum
Hardware ........................... One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number.
1 AT ROOM AMBIENT: +25 °C NOMINAL AND 50 % RELATIVE HUMIDITY NOMINAL, EXCEPT AS NOTED.
*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.
3862 - 1/2 ” Diameter Single-Turn Panel Control
Product Dimensions
PCB LAYOUT
5.08
(.200)
PANEL LAYOUT
6.325
(.249)
3.04
(.120)
45 °
2.54
(.100)
TYP.
6.325
(.249)
5.08
(.200)
3862E/T
15.88
3862C/N
STD.
(5/8)
.89 ± .25
11.51 ± .41
3.18 ± .03
(.035 ± .010)
(.453 ± .016)
DIA.
2 PLCS. (.125 ± .001)
12.07 ± .76
L
.79 (.475 ± .030)
(.031)
11.51 ± .41
(.453 ± .016)
12.07 ± .76
(.475 ± .030)
12.7 ± .41
DIA.
(.500 ± .016)
6.731
(.265)
DIA.
2.438 + .127 / -0.000
(.096 + .005 / - .000)
DIA. 2 PLCS.
Shaft End Detail
3862
9.53, 22.23
STD.
(3/8, 7/8)
.89 ± .25
3.18 ± .03
(.035 ± .010)
DIA.
(.125 ± .001)
2 PLCS.
L
.79
2.38
(.031)
(.094)
DIA. 12.7 ± .41
(.500 ± .016)
45 ° ± 15 °
.41
.41
45 ° ± 5 ° X
45 ° ± 5 ° X
6.25
(.016) 6.25
(.016)
-32 UNEF - 2A
-32 UNEF - 2A
(1/4)
6.35
3.3
.79 ± .25
(1/4)
.79
±
.25
POSITION OF SLOTS VARIABLE
OPTIONAL FLAT
LONG OR
(.250)
(.13) 16.88(.031 ± .010)
(.031 ± .010)
9.53
12.7
L=
FOR "T" BUSHING,
FOR "E" BUSHING
FROM BUSHING FOR SHAFTS UNDER (5/8)
(.375)
(.500)
6.35
9.65
L=
FOR "C" BUSHING,
FOR "N" BUSHING
(.250)
(.380)
PC PIN TERMINAL
3.04
(.12)
3
5.08
(.20)
5.08
(0.20)
.25
(.010)
2 PLCS.
6.22
(.245)
2 PLCS.
32-1/2 ° ± 10 °
FLAT ORIENTATION
@ CCW END
SLOTS ARE
NOT ORIENTED
CL OF LUG
J-HOOK TERMINAL
12.06 ± .762
(.475 ± .03)
2
2.31
2 PLCS.
(.091)
3
2.54
(0.10)
1
2
1
.723
(.0285)
2.286
(.09)
TYP.
4.953
REF ONLY
(.195)
8.89
(.35)
5.08
(0.20)
3
CCW
.762
(.03)
TYP.
1
2.54
(0.10)
DIMENSIONS:
2
POTENTIOMETER
6.53
(.250)
MAX.
MM
(INCHES)
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.
How to Order 3862 Series Panel Controls
3862
12
16
20
28
C
-
28
2
SHAFT TYPE
(FMS) & DIAMETER
3/8 ” (9.53 mm) L X 1/8 ” (3.18 mm) D
1/2 ” (12.7 mm) L x 1/8 ” (3.18 mm) D
5/8 ” (15.88 mm) L x 1/8 ” (3.18 mm) D
7/8 ” (22.20 mm) L X 1/8 ” (3.18 mm) D
-
102
A
RESISTANCE
CODE/VALUE
(IN OHMS)
BUSHINGS
C
C
C, E, N, T
C, E, N, T
Consult factory for lengths not shown.
C
E
N
T
L
BUSHING
Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
Locking 1/4 ” (6.35 mm) D x 1/2 ” (12.7 mm) L
Plain 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
Locking 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
(102)
(252)
(502)
(103)
(253)
(503)
(104)
(254)
(504)
(105)
1K
2.5K
5K
10K
25K
50K
100K
250K
500K
1M
RoHS IDENTIFIER
L
ELEMENT
TAPER/TOLERANCE
A
H
Linear ±10 %
Linear ±5 %
TERMINAL STYLE AND
SHAFT TYPE
MODEL
3862 1/2 ” (12.7 mm) D Single-Turn Cermet
1
2
3
5
6
7
Compliant
Solder Lugs, Plain End
Solder Lugs, Slotted End
Solder Lugs, Flatted Shaft
PC Pins, Plain End
PC Pins, Slotted End
PC Pins, Flatted End
Boldface features are Bourns standard
options. All others are available with higher
minimum order quantities.
REV. 06/15
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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