Features

6539/6639 - Precision Potentiometer

*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.

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

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

Mechanical Angle ..........................................................Continuous, Stops (340 ° +8 °, -0 °) available

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.

Product Dimensions

BO

URNS

31

2

30 °±3 °

TYP.

CW

65/6639

6539

6639

3/8 " - 32 UNEF

1

CLOCKWISE

CCW

12.70 ± .38

(.500 ± .015)

3.170 +.000/-.008

(.1248+.0000/-.0003)

DIA. SHAFT

45° ± 5 ° x

(.010)

CHAMFER

.25

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

SLOT

(.047)

X

(.063)

1.19

1.60

10.317+.000/-.051

(.4062+.000/-.002)

DIA.

3.18

(.125)

.25

(.010)

REF

9.53 ± .79

(.375 ± .031)

22.23 ± .76

(.875 ± .03)

R

4.83

(.19)

TOLERANCES: EXCEPT WHERE NOTED

.51

.13

DECIMALS: .XX ±

(.020)

.XXX ±

(.005)

FRACTIONS: ±1/64

MM

DIMENSIONS:

(IN.)

45° ± 5 ° x

(.010)

CHAMFER

.25