Bourns Precision Potentiometers-html.html

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 Characteristics

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

Load Life ............................................................................................1,000 hours, 5 watts

Total Resistance Shift ..............................................................................±2% maximum

Rotational Life (No Load) .......................................................2,000,000 shaft revolutions

Total Resistance Shift ..............................................................................±5% maximum

Mechanical Characteristics

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

WIPER

1-13/16

(46.04)

DIA.

29.37

(1-5/32)

3/8"-32 2A THD UNEF

CCW

45° X .25
CHAMFER

10.32 + .00/ - .05

(.4062 + .000/ -.002)

PILOT DIA.

7.94
5/16

20.64

(13/16)

1.52

(.06)

39.4

ADD

(1.55)

FOR

ADDITIONAL CUP

4.76

(3/16)

TYP.

2.36
(.093)

DIA. TYP.

6.34 + .00/ - .01

(.2497 + .0000/ - .0003)

SHAFT DIA.

3.18
(.125)

14.3

(9/16)

1.02

(.04)

NOTE: LOCKWASHER AND HEX NUT TO BE
SUPPLIED WITH EACH UNIT.

CLOCKWISE

CCW

WIPER

6.35

(1/4)

WIDE
SLOT

1.02

(.04)

DEEP

EXTENDS

1.02

(.04)

PAST MOUNTING SURFACE

44.45 ± .79

(1-3/4 ± 1/32)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

( IN.)

DIA. ANTI-ROTATION PIN

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.

Part Number

Resistance

Resolution

3400S-1-102

1,000

.020

3400S-1-502

5,000

.013

3400S-1-103

10,000

.010

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

261

3500 - Precision Potentiometer

.25
(.010)

X 45

CHAMFER

WIPER

3/8"-32 2A THD UNEF

CCW

12.7

(1/2)

8.0

.38

(.315

.015)

NOTE: LOCKWASHER AND HEX NUT TO BE
SUPPLIED WITH EACH UNIT.

NOTE: SHAFT LENGTH VARIATIONS

3500S-1-RC

3500S-2-RC

3501H-1-RC

3500S-2/3501H-1

5.46

.76

(.215

.030)

1.52

(.06)

25.4

.51

(1.00

.02)

10.32 + .00/ - .05

(.4062+.000/-.002)

PILOT DIA.

.6.34 + .00/- .01

(.249+.0000/-.0003)

REF.

20.64

.79

(13/16

1/32)

DIA.

22.23

(7/8)

ADJUSTMENT SLOT

LOCATION OF OPTIONAL

A/R PIN ON R

8.9

(.35)

16.0
(.63) R
MAX.

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX

(.010),

.XXX

(.005)

FRACTIONS:

1/64

DIMENSIONS:

(IN.)

CLOCKWISE

CCW

WIPER

WIDE X

.81

(.032)

DEEP

.81

.25

(.032

.010)

11/16

(17.46)

13/16

(20.64)

13/16

(20.64)

.29

(7.37)

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.

Features

■

Bushing mount

■

Sealable

■

Non-standard features and specifications
available

■

Optional high torque feature

■

Optional center tap feature

■

Gangable

Electrical Characteristics

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

nvironmental Characteristics

Operating Temperature

Static Operation Temp Range

...................................-65°C to +125°C

Dynamic Temp Range
.....................................+1°C to +125°C

Temperature Coefficient

...................±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 revolutions

Total Resistance Shift ...±5% maximum

Moisture Resistance .........MIL-STD-202,

Method 103,Condition B

Total Resistance Shift ...±2% maximum

Part Number

Resistance

Resolution

3500S-2-102

1,000

.030

3500S-2-502

5,000

.018

3500S-2-103

10,000

.019

Recommended Part Numbers

Mechanical Characteristics

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

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

262

3540/3541 - Precision Potentiometer

3540

3541

Wirewound Element

Hybritron

Element

Electrical Characteristics

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

Environmental Characteristics

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 Coefficient

..............±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 revolutions

..5,000,000 shaft revolutions

Total Resistance Shift ..................±5% maximum ......................±5% maximum

Moisture Resistance ......................MIL-STD-202, Method 103, ..MIL-STD-202, Method 103,

Condition B

Total Resistance Shift ..................±2% maximum ......................±5% maximum

Mechanical Characteristics

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

3540S-1/3541H-1

5.72 ± .38

(.225±.015)

10.32 +.00/.05

(.406+.000/-.002)

3/8" 32-UNEF-2ATHD

ADJUSTMENT

SLOT

.81

WIDE

.81±.25

DEEP

1.52

(.06)

7.92 ± .38

(.312 ± .015)

19.05 ± .38

(.750 ± .015)

30°

± 5°

6.35

(.25)

22.23 ± .38

(.875 ± .015)

MTG. FACE

12.45

(.49)

OPTIONAL ANTIROTATION LUG

(-91) 1.42 X .50 ON 7.4 RADIUS.

LENGTH 1.27 FROM MOUNTING SURFACE.

(SUGGESTED PANEL HOLE 1.6 DIA.)

CLOCKWISE

CCW

WIPER

18.3

(.72)

14.35 ± .38

(.565±.015)

DIA.

(.032)

(.032±.010)

6.342 + .000/ - .008

(.2497+.0000/-.0003)

DIA.

20.62 ± .79

(.812 ± .031)

15.88
(.625)

DIA. MIN.

15.88

(.625)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

.25
(.010)

X 45° CHAMFER

R MAX.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Consult manufacturer for complete specification details.

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

Part Number

Resistance

Resolution

3540S-1-201

200

.042

3540S-1-501

500

.031

3540S-1-102

1,000

.027

3540S-1-202

2,000

.021

3540S-1-502

5,000

.021

3540S-1-103

10,000

.019

3540S-1-203

2,000

.014

Recommended Part Numbers

Part Number

Resistance

Resolution

3540S-1-103

10,000

.019

3540S-1-203

20,000

.014

3540S-1-503

50,000

.011

3540S-1-104

100,000

.008

3541H-1-102

1,000

.027

3541H-1-502

5,000

.021

3541H-1-103

10,000

.019

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

263

3543/3545 - Precision Potentiometer

3543

3545

3-Turn

5-Turn

Electrical Characteristics

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)

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 Characteristics

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 Coefficient

..............±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

Total Resistance Shift ..................±2% maximum ......................±2% maximum

Mechanical Characteristics

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

3543S-1/3545S-1

18.3

(.72)

5.72 ± .38

(.225 ± .015)

10.31+ .00/ - .05

(.406+.000/-.002)

3/8" 32-UNEF-2ATHD

ADJUSTMENT

SLOT WIDE

.81±.25

DEEP

1.52

(.06)

7.92 ± .38

(.312 ± .015)

19.05 ± .38

(.750 ± .015)

20.62 ± .79

(.812 ± .031)

30°

± 5°

6.35

(.25)

22.23 ± .38

(.875 ± .015)

MTG. FACE
15.88

DIA. MIN.

12.45

(.49)

CLOCKWISE

CCW

WIPER

14.35 ± .38

(.565 ± .015)

DIA.

(.032±.0160)

.81

(.032)

6.342 + .000/ - .008

(.2497+.0000/-.0003)

DIA.

OPTIONAL ANTIROTATION LUG

(-91)

1.42 X .50

7.4

RADIUS

LENGTH 1.27 FROM MOUNTING SURFACE.

(SUGGESTED PANEL HOLE

1.6

DIA.)

(.056 X .02)

(.29)

(.063)

(.625)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

NOTE: LOCKWASHER AND MOUNTING NUTS SUPPLIED.

ADD .75 (19MM) FOR ADDITIONAL CUPS.

.25
(.010)

X 45° CHAMFER

15.88
(.625)

R MAX.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Consult manufacturer for complete specification details.

Features

■

Bushing mount

■

Optional AR pin feature

■

Non-standard features and specifications
available

■

Gangable

Recommended Part Numbers

Part Number*

Resistance

Resolution

(

Ω

)

(%)

3543S-1-102

1,000

.063

3543S-1-202

2,000

.062

3543S-1-502

5,000

.047

3543S-1-103

10,000

.040

Part Number

Resistance

Resolution

(

Ω

)

(%)

3545S-1-102

1,000

.043

3545S-1-202

2,000

.036

3545S-1-502

5,000

.038

3545S-1-103

10,000

.027

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

264

3590 - Precision Potentiometer

Electrical Characteristics

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 Characteristics

Operating Temperature

Static Operation Temperature Range....................................................-55°C to +125°C
Dynamic Operation Temperature Range ................................................+1°C to +125°C

Temperature Coefficient

.........................................................±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

BUSHING DIAMETER
(SEE PART NUMBERS)

SHAFT DIAMETER
(SEE PART NUMBERS)

CCW

STANDOFFS

12.70
(.500)
MOUNTING SURFACE

15.54
(.612)

RECOMMENDED PC BOARD MOUNTING HOLE LOCATIONS

FMS

5.08 ± .38

(.200 ± .015)

6.99 ± .38

(.275 ± .015)

5.08 ± .38

(.200 ± .015)

10.31 + .00/- .13

(.406+.000/-.005)

.25

(.010)

1.19
(.047)
.81 ± .25
(.032 ± .010)

(METAL VERSIONS)

7.92

(.312)

.81

(.032)

20.62 ± .81

(.812 ± .032)

18.6 ± .4

(.732 ± .015)

12.2

(.48)

11.81

(.465)

DIA.

22 ± .38

(.875 ±.015)

DIA.

HOLE DIAMETER

2.08

(.082)

5.08

(.200)

5.08

(.200)

6.99

(.275)

TOLERANCES: EXCEPT WHERE NOTED
.51 .13

DECIMALS: .XX ±

(.02),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

(PLASTIC VERSIONS)

NOTE: For Anti-Rotation pin add 91 after configuration dash number. Example: -2 becomes -291 to add AR pin.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Consult manufacturer for complete specification details for resistance below 1K ohms.

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)

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

Recommended Part Numbers

Resistance

Resolution

(Printed Circuit)

(Solder Lug)

(

Ω

)

(%)

3590P-1-102

3590S-2-102

1,000

.029

3590P-1-202

3590S-2-202

2,000

.023

3590P-1-502

3590S-2-502

5,000

.025

3590P-1-103

3590S-2-103

10,000

.020

3590P-1-203

3590S-2-203

20,000

.016

3590P-1-503

3590S-2-503

50,000

.013

3590P-1-104

3590S-2-104

100,000

.009

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

6537/6538 - 22mm Precision Potentiometer

6537

CLOCKWISE

CCW

WIPER

6538 BALL BEARING

12.70

.80

(.375

.031)

12.70

.38

(.500

.015)

1.57

(.062)

1.57

(.062)

1.57

(.062)

3.170+.000/-.008

(.1248+.0000/-.0003)

DIA.

.51

(.020)

CHAMFER

22.23

(.875)

DIA.

3.18

(.125)

.51

(.020)

REF.

19.050+.000/-.012

(.75+.0000/-.0005)

DIA.

19.81

(.780)

DIA.

°±

TYP.

.19

(4.80)

5.08

(.020)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX

(.010),

.XXX

(.005)

FRACTIONS:

1/64

DIMENSIONS:

(IN.)

12.70

.38

(.475

.015)

12.70

.38

(.500

.031)

1.57

(.062)

1.57

(.062)

1.57

(.062)

.25

(.010)

CHAMFER

22.23

(.875)

DIA.

3.18

(.125)

.51

(.020)

REF.

19.81

(.780)

DIA.

19.050+.000/-.012

(.75+.0000/-.0005)

DIA.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

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

Specifications are subject to change without notice.

265

Electrical Characteristics

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

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

Mechanical Characteristics

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

Recommended Part Numbers

Part Number

Resistance

(

Ω

)

6537S-1-103

10,000

Part Number

Resistance

(

Ω

)

6538S-1-102

1,000

6538S-1-202

2,000

6538S-1-502

5,000

6538S-1-103

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.

266

6574 - Precision Potentiometer

Electrical Characteristics

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 Characteristics

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

Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B

Total Resistance Shift ............................................................................±10% maximum

Vibration.......................................................................................................................15G

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 Characteristics

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

CHAMFER

90° MAX.

15°

± 3°

15°

± 3°

CLOCKWISE

CCW

WIPER

MIN.

6.35

(.25)

DIA.

6.34 + .000/- .007

(.2497+.0000/-.0003)

47.63 +.000/ - .025
(1.875+.000/-.001)

DIA.

51.0 +.127/- .25

(2.00 +.005/-.010)

1.57

(.062)

2.36

(.093)

2.03

(.080)

MIN.

15.24 ± .787

(.600 ± .031)

15.9 ± .80

(5/8 ± 1/32)

29.59

(1.165)

TOLERANCES: EXCEPT WHERE NOTED
.38 .13

DECIMALS: .XX ±

(.015),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

.25
(.010)

X 45°

MAX.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Features

■

Servo mount style

■

Shaft supported by front and rear preci-
sion ball bearings

■

Non-standard features and specifications
available

■

Gangable up to 10 cups

Part Number*

Resistance

(W)

6574S-1-102

1,000

6574S-1-502

5,000

6574S-1-103

10,000

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

267

6637 - Precision Potentiometer

URNS

30°± 3°
TYP.

3/8-32 UNEF-THD

22.23 ± .79

(7/8 ± 1/32)

45° X

(.010)

CHAMFER

NOTE: SHAFT SUPPORTED BY FRONT SLEEVE BEARING.

6637
7/8" (22MM) DIA.

4.83

(.19)

1.57

(.062)

11.25 ± .38

(.443 ± .015)

22.23

(7/8)

DIA.

10.317 + .000/- .051

(.4062+.000/-.002)

DIA.

3.170 + .000/-.008

(.1248+.0000/-.0003)

.25

9.53 ± .79

(3/8 ± 1/32)

SHAFT SLOT

(.032)

WIDE X

(.032)

DEEP

.81

3.18

(1/8)

At room ambient: +25°C nominal and 50% relative

humidity nominal, except as noted.

Electrical Characteristics

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 Characteristics

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

CLOCKWISE

CCW

WIPER

Features

■

Bushing mount

■

Excellent resolution

■

High rotational life

■

Non-standard features and specifications
available

Mechanical Characteristics

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.

Part Numbers

Resistance

(W)

6637S-1-102

1,000

6637S-1-502

5,000

6637S-1-103

10,000

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

268

6539/6639 - Precision Potentiometer

URNS

30°± 3°
TYP.

65/6639

6539

6639

3/8" - 32 UNEF

CLOCKWISE

CCW

WIPER

12.70 ± .38

(.500 ± .015)

3.170 +.000/-.008

(.1248+.0000/-.0003)

DIA. SHAFT

30° ± 10° x

(.020)

CHAMFER

.51

1.57

(.062)

1.57

(.062)

1.57

(.062)

19.050+ 000/-.012

(.750+.0000/-.0005)

19.81

(.780)

DIA.

.51

(.020)

REF

12.70 ± .79

(.500 ± .031)

3.18

(.125)

22.23

(.875)

DIA.

11.25 ± .38

(.443±.015)

1.57

(.062)

22.23

(.875)

DIA.

6.342+.000/-.008

(.2497+.0000/-.0003)

DIA. SHAFT

30° ± 10° ±

(.020)

CHAMFER

.51

SLOT

(.047)

(.063)

1.19

1.60

10.317+.000/-.051

(.4062+.000/-.002)

DIA.

3.18

(.125)

.51

(.020)

REF

9.53 ± .79

(.375 ± .031)

22.23 ± .76

(.875 ± .03)

4.83

(.182)

TOLERANCES: EXCEPT WHERE NOTED
.38 .13

DECIMALS: .XX ±

(.015)

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Features

■

Essentially infinite resolution

■

Excellent rotational life

■

High quality, rugged construction

■

General purpose applications

■

Non-standard features available

■

Cost and space saving

Part Numbers

Resistance

Bushing Mount

Mechanical Stops

(

Ω

)

6639S-1-102 6639S-301-102

1,000

6639S-1-202

2,000

6639S-1-502 6639S-301-502

5,000

6639S-1-103 6639S-301-103

10,000

6639S-1-203

20,000

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

6539

6639

Servo Mount

Bushing Mount

Electrical Characteristics

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

Total Resistance Shift......................±10% maximum .....................±10% maximum

Mechanical Characteristics

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

value and tolerance,

linearity tolerance,

wiring diagram and

date code.

Part Number

Resistance

(

Ω

)

6539S-1-102

1,000

6539S-1-502

5,000

6539S-1-103

10,000

Specifications are subject to change without notice.

269

6657 - Precision Potentiometer

Electrical Characteristics

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 Characteristics

Operating Temperature

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 Characteristics

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

URNS

30°± 3°
TYP.

CLOCKWISE

3/8"-32 UNEF-2ATHD

45° X

(.010)

CHAMFER

SHAFT SLOT

CCW

WIPER

1.57

(.062)

16.46 ± .38

(.648 ± .015)

33.34

(1-5/16)

DIA.

10.317+.000/-.051

(.4062+.000/-.002)

DIA. SHAFT

6.345 +.000/-.008

(.2498 +.0000/-.0003)

DIA. SHAFT

.25

WIDE

1.19

(.047)

DEEP

1.60

(.063)

6.35

(.25)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

9.53 ± .79

(3/8± 1/32)

22.23 ± .79

(7/8 ± 1/32)

3.18

(1/8)

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Features

■

Bushing mount

■

Shaft supported by front sleeve bearing

■

Non-standard features and specifications
available

Part Number*

Resistance

(

Ω

)

6657S-1-102

1,000

6657S-1-202

2,000

6657S-1-502

5,000

6657S-1-103

10,000

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

270

3600 - Precision Potentiometer

Electrical Characteristics

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

Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum

Environmental Characteristics

Operating Temperature

Static Operation Temperature Range......................................................-65°C to +85°C
Dynamic Operation Temperature Range ..................................................+1°C to +85°C

Temperature Coefficient

.........................................................±50ppm/°C maximum/unit

Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B

Total Resistance Shift ..............................................................................±2% maximum

Vibration.......................................................................................................................10G

Shock...........................................................................................................................50G

Load Life .........................................................................................1,000 hours, 1.5 watts

Total Resistance Shift ..............................................................................±2% maximum

Rotational Life (No Load)

.........................................................200,000 shaft revolutions

Total Resistance Shift ..............................................................................±2% maximum

Mechanical Characteristics

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

BPOT®

19.10

(3/4)

NON-TURN PIN
EXTENDS
1.70 ± .13
(.067 ± .005)

PILOT DIA.

10.26 ± .05

(.404 ± .002)

3/8"-32UNEF-2ATHD

NON-TURN PIN
EXTENDS
1.70 ± .13
(.067 ± .005)

PANEL HOLE PATTERN

LOCKWASHER AND MOUNTING NUT

TO BE SUPPLIED WITH EACH UNIT

CLOCKWISE

CCW

WIPER

DIA.

25.40 ± .80

(1.00 ± .03)

8.73

(11/32)

19.10

(3/4)

DIA.

(.156)

MAX. -

(.060)

MIN.

PANEL THICKNESS

3.96

1.52

#21 AWG GOLD PLATED GRADE A

NICKEL SOLDER LUGS

(.0285)

LOCATED ON .05 RADIUS

.724

3.18 ± .79

(1/8 ±1/32)

1.40 ± .38

(.055 ± .015)

I.D.

4.76 ± .79

(3/16 ± 1/32)

DIA.

1.98 + .08/ - .03

(.078 +.003/-.001)

7.11

(.280)

10.41 ± .08

(.410 ± .003)

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

DIA.

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.

Features

■

Bushing mount

■

Cost saving; pre-phased

■

Highly readable clockface readout

■

Easy mounting

Part Number

Resistance

Resolution

(

Ω

)

(%)

3600S-1-102

1,000

.035

3600S-1-502

5,000

.027

3600S-1-103

10,000

.022

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

271

3610 - Precision Potentiometer

Electrical Characteristics

Dielectric Withstanding Voltage ..............................................MIL-STD-202, Method 301

Insulation Resistance (500 VDC) ..............................................1,000 megohms minimum

Environmental Characteristics

Operating Temperature

Static Operation Temperature Range......................................................-25°C to +85°C
Dynamic Operation Temperature Range ..................................................+1°C to +85°C

Temperature Coefficient

........................................................±50ppm/°C maximum/wire

Moisture Resistance...........................................MIL-STD-202, Method 103, Condition B

Total Resistance Shift ..............................................................................±2% maximum

Vibration.......................................................................................................................10G

Shock...........................................................................................................................50G

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

Mechanical Characteristics

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

PANEL HOLE PATTERN

FULL R

ANTIROTATION
KEY

VIEW ROTATED 45°

ANTIROTATION

KEY

CLOCKWISE

CCW

WIPER

1 3

14.27

(.562)

(NO. 30 DRILL)

3.264

(.1285)

REF.

12.65

(.498)

DIA.

25.40

(1.00)

NOTES:
1. SNAP-IN MOUNTING CUP
ACCOMMODATES PANEL THICKNESS

(.025)

THRU

(.078)

(NO. 22GA

THRU NO. 14GA) AND

(.125)

.64

1.98

3.18

18.80 ± .38

(.740 ± .015)

16.26 ± .38

(.640 ± .015)

1.27

(.050)

4.76 ± .79

(3/16 ± 1/32)

22.23

(7/8)

DIA.

.724

(.0285)

31.496

(1.240)

DIA.

TOLERANCES: EXCEPT WHERE NOTED
.25 .13

DECIMALS: .XX ±

(.010),

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

#21 AWG GOLD
PLATED PINS

DIA.

LOCATED ON

RADIUS

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.

Features

■

Snap-in mounting

■

Space saving - extends only 5/8” behind
most panels

■

Easy one-hole, snap-in mounting

■

Digital dial provides excellent readability

Part Number

Resistance

Resolution

(W)

(%)

3610S-1-102

1,000

.035

3610S-1-502

5,000

.027

3610S-1-103

10,000

.022

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

272

3680 - Precision Potentiometer

Electrical Characteristics

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

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

Mechanical Characteristics

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

3680

7.77 ± .38

(.306 ± .015)

PANEL

8.38 ± .38

(.33 ± .015)

INCR.

WIPER

7.87

(.31)

20.57

(.810)

23.62

(.93)

3.18

(.125)

MIN.

.81

(.032)

MAX.

3.18

(.125)

26.67

(1.050)

TOLERANCES: EXCEPT WHERE NOTED
.38 .13

DECIMALS: .XX ±

(.015)

.XXX ±

(.005)

FRACTIONS: ±1/64
MM

DIMENSIONS:

(IN.)

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.

Dimensions

Weight (Approx.)

Model

e ±.015 (±.381)

oz.

gms.

3682

26.67 (1.050)

25.15 (.990)

10.67 (.420)

11.94 (.47)

8.38 (.330)

.576

16.5

3683

37.08 (1.460)

35.31 (1.390)

18.54 (.730)

11.94 (.47)

4.19 (.165)

.824

23.5

Dimensions

Model

f ±.010 (±.254)

g ±.010 (±.254)

3682

21.08 (.830)

25.91 (1.020)

3683

21.08 (.830)

36.07 (1.420)

RECOMMENDED

PANEL CUTOUT

.030
(.76)

R MAX.

Features

■

Repeatable settings

■

Resolution to 0.001%

■

Digital display provides excellent read-
ability

■

Snap-in panel mount

Resistance

3682S-1

3683S-1

(

Ω

)

Decade

1,000

-102

5,000

-502

10K

-103

50K

-503

100K

-104

Recommended Part Numbers

BOLD-FACE LISTINGS ARE IN STOCK AND READILY
AVAILABLE THROUGH DISTRIBUTION.

FOR OTHER OPTIONS CONSULT FACTORY.

Specifications are subject to change without notice.

273

H-385 - Panel Seal Assembly

Physical Characteristics

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

Bourns

Model H-385 Panel Seal Assembly minimizes accidental entry of liquids or

foreign matter through the front of the Model 3680 Family Potentiometer.

At room ambient: +25°C nominal and 50% relative humidity nominal, except as noted.

Frame

Panel Cutout/

For Use With

Part Number

Dimensions

Hole Dimensions

“C”

“A”

“B”

3682

H-385-2

50.60 (1.992)

25.91 (1.020)

39.37 (1.550)

3683

H-385-3

60.76 (2.392)

36.07 (1.420)

49.53 (1.950)

PANEL CUT-OUT/HOLE DIMENSIONS

RECOMMENDED HOLE FOR TWO #6 SCREWS
(NOT SUPPLIED)

"B" ±

(.010)

"C" ±

(.010)

10.54 ± .13

(.415 ± .005)

21.08 ± .25

(.830 ± .010)

"A" ±

(.010)

.25

6.73 ± .13

(.265 ± .005)

.25

41.40 ± .38

(1.63 ± .015)

.25

H-385 MOUNTING INSTRUCTIONS

1. Cut out and drill panel

per chart.

2. Install snap-in potentiometer

3. Locate silicone boot

and frame

over potentiometer and holes.

4. Attach panel seal assembly to panel

with two #6 screws (not supplied).

Features

■

For use with Model 3680 digital pushbut-
ton precision potentiometer

Specifications are subject to change without notice.

274

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 wire-
wound 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 sur-
face. 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 essen-
tially infinite.

Conductive plastic elements are gener-

ally available in a wide range of resistance
values and tapers.

Moisture resistance, temperature coef-

ficient, power dissipation and wiper cur-
rent capacity for conductive plastic ele-
ments are not as good as cermet ele-
ments.

Wirewound Elements

Wirewound elements offer good stabili-

ty, 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, sud-
den, 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.

The many turns of resistance wire

exhibit an inductive reactance that
increases directly with frequency. This
effect is most noticeable in low total resis-
tance 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 ele-
ments.

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, essen-
tially 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 speci-
fied current and moved over the adjust-
ment travel in either direction at a con-
stant 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 equiva-
lent). 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 deter-
mining whether or not a contact resis-
tance 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, maxi-
mum. The test current used shall be in
accordance with the table below, unless
otherwise specified.

Test

Current

(±20%) Total Resistance Range

30 ma

50 Ohms

10 ma

= or >50 Ohms to <500 Ohms

1 ma

= or >500 Ohms to <100K Ohms

100 ua

= or >100K Ohms to <2 Megohms

50 ua

= or >2 Megohms

Dielectric Withstanding Voltage

DEFINITION

The ability to withstand under pre-

scribed conditions, a specified potential
of a given characteristic between the ter-
minals of each cup and exposed con-
ducting 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 (interconnect-
ed) 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

Definitions and Test Procedures

Specifications are subject to change without notice.

275

Definitions and Test Procedures

leakage current indicating device through-
out this test for evidence of damage, arc-
ing, 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 maxi-
mum departure from a specified reference
line. The wiper of the potentiometer is
required to be excited by a specified cur-
rent 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 poten-
tiometer just prior to making noise mea-
surements. The potentiometer shaft is
then connected mechanically to the con-
stant speed drive and electrically
connected to the test circuit. With the
constant speed drive engaged, the poten-
tiometer noise characteristic may then be
noted on the oscilloscope as the wiper
traverses one complete cycle over the full
electrical continuity travel and the maxi-
mum values are compared to the speci-
fied 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 ini-
tial measurements as noise.

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 speci-
fied portion thereof.

TEST PROCEDURE

Consult factory.

Insulation Resistance

DEFINITION

The resistance to a specified

impressed DC voltage between the termi-
nals of each cup and the exposed con-
ducting 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 potentiome-
ter. 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 insula-
tion resistance during this voltage appli-
cation, 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 electri-

cal output not present in the input. They
are measured for specified travel incre-
ments over the theoretical electrical travel
and expressed as a percentage of the
total applied voltage.

TEST PROCEDURE

Mount the potentiometer in the con-

stant-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 resis-
tance 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 oper-
ating 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 resis-
tance winding in the actual electrical trav-
el, 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 speci-
fied portion of the resistance element.

TEST PROCEDURE

Consult factory.