PL IA N T Features CO M ■ Essentially infinite resolution *R oH S ■ Excellent rotational life ■ High quality, rugged construction ■ General purpose applications ■ Non-standard features available ■ Cost and space saving 6539/6639 - Precision Potentiometer Electrical Characteristics1 6539 Servo Mount 6639 Bushing Mount Standard Resistance Range................ 1 K to 100 K ohms......................1 K to 100 K ohms Total Resistance Tolerance.................. ±15 % .........................................±15 % Independent Linearity .......................... ±2.0 % ........................................±2.0 % Effective Electrical Angle ..................... 340 ° +3 ° ...................................340 ° +3 ° End Voltage ......................................... 0.5 % maximum .........................0.5 % maximum Output Smoothness ............................. 0.1 % ..........................................0.1 % Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level ......................................... 750 VAC minimum .....................750 VAC minimum Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less) +70 °C.............................................. 1.0 watt.......................................1.0 watt +125 °C............................................ 0 watt..........................................0 watt Insulation Resistance (500 VDC) ........ 500 megohms minimum .............500 megohms minimum Resolution............................................ Essentially infinite.......................Essentially infinite Product Dimensions 6539 12.70 ± .38 (.500 ± .015) 1.57 (.062) 1.57 (.062) 1.57 (.062) 19.81 (.780) DIA. .51 (.020) REF 12.70 ± .79 (.500 ± .031) 3.18 (.125) 6639 10.317+.000/-.051 DIA. (.4062+.000/-.002) 11.25 ± .38 (.443 ± .015) 6.342+.000/-.008 (.2497+.0000/-.0003) DIA. SHAFT .25 45° ± 5 ° x (.010) CHAMFER 1.19 1.60 SLOT (.047) X (.063) 1.57 (.062) 22.23 (.875) DIA. .25 (.010) REF 9.53 ± .79 (.375 ± .031) 22.23 ± .76 (.875 ± .03) Mechanical Characteristics1 Mechanical Angle ..........................................................Continuous, Stops (340 ° +8 °, -0 °) available Torque (Starting & Running)2 ...................................................................0.40 N-cm (0.5 oz.-in.) max. Mounting ..............................................................................170-200 N-cm (15-18 lb.-in.) maximum Shaft Runout.................................................................................................0.13 mm (0.005 in.) T.I.R. Lateral Runout ..............................................................................................0.08 mm (0.003 in.) T.I.R. Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R. Shaft Radial Play ..........................................................................................0.13 mm (0.005 in.) T.I.R. Pilot Diameter Runout ................................................................................0.06 mm (0.0025 in.) T.I.R. Backlash ....................................................................................................................... 0.1 º maximum Weight ....................................................... 18 gm (6539 Servo Mount), 24 gm (6639 Bushing Mount) Terminals ................................................................................................................... Rear Turret Type Soldering Condition Manual Soldering .................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire 370 °C (700 °F) max. for 3 seconds Wave Soldering ........................................................ 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux 260 °C (500 °F) max. for 5 seconds Wash processes ..................................................................................................Not recommended Marking ................................................. Manufacturer’s name and part number, resistance value and tolerance, linearity tolerance, wiring diagram, and date code. Ganging (Multiple Section Pots) .................................................................................. 1 cup maximum Hardware (6639 only) ................................. One lockwasher (H-37-2) and one mounting nut (H-38-2) is shipped with potentiometer. 19.050+ 000/-.012 (.750+.0000/-.0005) 22.23 (.875) DIA. Environmental Characteristics1 Operating Temperature Range ............ +1 °C to +125 °C ........................-40 °C to +125 °C Storage Temperature Range ............... -65 °C to +125 °C .......................-65 °C to +125 °C Temperature Coefficient Over Storage Temperature Range ...... ±500 ppm/°C maximum..............±500 ppm/°C maximum Vibration .............................................. 15 G ...........................................15 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Total Resistance Shift ...................... ±10 % .........................................±10 % Voltage Ratio Shift ........................... ±0.5 % ........................................±0.5 % Shock................................................... 50 G ...........................................50 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Total Resistance Shift ...................... ±5 % ...........................................±5 % Voltage Ratio Shift ........................... ±0.5 % ........................................±0.5 % Load Life .............................................. 1,000 hours, 1 watt.....................1,000 hours, 1 watt Total Resistance Shift ...................... ±10 % .........................................±10 % Rotational Life (No Load)..................... 10,000,000 shaft revolutions ......10,000,000 shaft revolutions Total Resistance Shift ...................... ±10 % maximum ........................±10 % maximum Moisture Resistance (MIL-STD-202, Method 106) Total Resistance Shift ...................... ±15 % .........................................±15 % IP Rating .............................................. IP 40 ...........................................IP 40 3.170 +.000/-.008 (.1248+.0000/-.0003) DIA. SHAFT .25 45° ± 5 ° x (.010) CHAMFER 3/8 " - 32 UNEF 3.18 (.125) 65/6639 UR BO NS 2 4.83 R (.19) CW 3 1 30 °±3 ° TYP. TOLERANCES: EXCEPT WHERE NOTED .51 .13 DECIMALS: .XX ± .XXX ± (.020) (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) 1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. 22.82 N-cm (4.0 oz.-in.) max. at -40 °C. 2 CCW WIPER 3 1 CLOCKWISE *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. CW 6539/6639 - Precision Potentiometer Recommended Part Numbers Part Number 6539S-1-102 6539S-1-502 6539S-1-103 Resistance (Ω) 1,000 5,000 10,000 Part Numbers Continuous Turn Mechanical Stops 6639S-1-102 6639S-301-102 6639S-1-202 6639S-1-502 6639S-301-502 6639S-1-103 6639S-301-103 6639S-1-203 Resistance (Ω) 1,000 2,000 5,000 10,000 20,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. Panel Thickness Dimensions (For Bushing Mount Only) 2.46 - 3.81 (.097 - .150) PANEL HEX NUT 10.44 ± .07 DIA. (.411 ± .003) LOCKWASHER POT Panel thickness and hole diameters are recommended for best fit. However, customers may adjust the dimensions to suit their specific application. DIMENSIONS: MM (INCHES) TOLERANCES: ± 0.127 (.005) REV. 10/11 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.