PL IA NT Features S CO M ■ *R oH ■ ■ ■ ■ ■ Essentially infinite resolution 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 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 Product Dimensions 6539 12.70 ± .38 (.500 ± .015) 1.57 (.062) 1.57 (.062) 1.57 (.062) 3.170 +.000/-.008 (.1248+.0000/-.0003) DIA. SHAFT .25 45 ° ± 5 ° x (.010) CHAMFER 19.050+ 000/-.012 (.750+.0000/-.0005) 22.23 (.875) DIA. 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° ± (.010) CHAMFER 1.19 1.60 SLOT (.047) X (.063) 1.57 (.062) 22.23 (.875) DIA. 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....................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter. Maximum temperature 399°C (750 °F) for 3 seconds. No wash process to be used with no clean flux. 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. 1 2 3.18 (.125) 65/6639 UR BO NS 2 3 6539S-1-102 6539S-1-502 6539S-1-103 1,000 5,000 10,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. Part Numbers Continuous Turn 1 30 °± 3 ° TYP. TOLERANCES: EXCEPT WHERE NOTED .51 .13 DECIMALS: .XX ± .XXX ± (.020) (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) Recommended Part Numbers Resistance (Ω) 4.83 R (.19) CW At room ambient: +25 °C nominal and 50 % relative humidity, except as noted. 2.82 N-cm (4.0 oz.-in.) max. at -40 °C. Part Number .25 (.010) REF 9.53 ± .79 (.375 ± .031) 22.23 ± .76 (.875 ± .03) 3/8 " - 32 UNEF 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 2 CCW WIPER 3 1 CW CLOCKWISE FOR OTHER OPTIONS CONSULT FACTORY. *RoHS Directive 2002/95/EC Jan 27 2003 including Annex Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. REV. 06/06