PL IA N T Features ■ Non-standard features and specifications M ■ Infinite resolution element available *R oH S CO ■ 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 6537/6538 - 22 mm Precision Potentiometer Electrical Characteristics1 6537 Product Dimensions 6538 Standard Resistance Range................ 1 K to 100 K ohms......................1 K to 100 K ohms Total Resistance Tolerance.................. ±10 % .........................................±10 % Independent Linearity .......................... ±1 % ...........................................±1 % 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 watt..........................................1 watt +125 °C............................................ 0 watt..........................................0 watt Insulation Resistance (500 VDC) ........ 1,000 megohms minimum ..........1,000 megohms minimum Resolution............................................ Essentially infinite.......................Essentially infinite 6537 12.70 ± .38 (.500 ± .015) 1.57 (.062) 3.170+.000/-.008 DIA. (.1248+.0000/-.0003) .25 45 ± 5 ° x CHAMFER (.010) 1.57 (.062) 1.57 (.062) 22.23 (.875) DIA. .51 REF. (.020) Environmental Characteristics1 Operating Temperature Range ............ -40 °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 ...................... ±5 % maximum ..........................±5 % maximum Voltage Ratio Shift ........................... ±0.5 % maximum .......................±0.5 % maximum Shock................................................... 50 G ...........................................50 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Total Resistance Shift ...................... ±5 % maximum ..........................±5 % maximum Voltage Ratio Shift ........................... ±0.5 % maximum .......................±0.5 % maximum Load Life .............................................. 1,000 hours, 1 watt.....................1,000 hours, 1 watt Total Resistance Shift ...................... ±10 % maximum ........................±10 % maximum Rotational Life (No Load)..................... 10,000,000 shaft revolutions ......20,000,000 shaft revolutions Total Resistance Shift ...................... ±10 % maximum ........................±10 % maximum Moisture Resistance (MIL-STD-202, Method 106) Total Resistance Shift ...................... ±15 % maximum ........................±10 % maximum IP Rating .............................................. IP 40 ...........................................IP 50 19.050+.000/-.012 (.75+.0000/-.0005) DIA. 3.18 (.125) 12.70 ± .80 19.81 (.375 ± .031) (.780) DIA. 4.80 R (.19) 30 ± 3 ° TYP. 6538 BALL BEARING 12.70 ± .38 (.475 ± .015) 1.57 (.062) 1.57 (.062) 1.57 (.062) Mechanical Characteristics1 Mechanical Angle ................................ Continuous ................................Continuous Torque (Starting & Running) ..................0.40 N-cm (0.5 oz.-in.) max. ...... 0.18 N-cm (0.25 oz.-in.) max. Shaft Runout........................................ 0.025 mm (0.001 in.) T.I.R. ........0.025 mm (0.001 in.) T.I.R. Lateral Runout ..................................... 0.08 mm (0.003 in.) T.I.R. ..........0.08 mm (0.003 in.) T.I.R. Shaft End Play ..................................... 0.13 mm (0.005 in.) T.I.R. ..........0.13 mm (0.005 in.) T.I.R. Shaft Radial Play ................................. 0.13 mm (0.005 in.) T.I.R. ..........0.08 mm (0.003 in.) T.I.R. Pilot Diameter Runout ......................... 0.06 mm (0.0025 in.) T.I.R. ........0.06 mm (0.0025 in.) T.I.R. Backlash .............................................. 0.1 ° maximum...........................0.1 ° maximum Weight ................................................. 18 gm.........................................18 gm Terminals ...................................................................................................... Molded-in 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 ........................................................................................................... No hardware included .25 45 ± 15 ° x (.010) CHAMFER 22.23 ± 0.38 (.875 ± .015) DIA. .51 REF. (.020) 19.050+.000/-.012 (.75+.0000/-.0005) DIA. 3.18 ± 0.38 (.125 ± .015) 12.70 ± .38 (.500 ± .031) 19.81 (.780) DIA. 5.08 R (.020) 45 ± 5 ° 1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. TOLERANCES: EXCEPT WHERE NOTED ±.25 ±.13 DECIMALS: .XX .XXX ±(.020), ±(.005) FRACTIONS: 1/64 MM DIMENSIONS: (IN.) Recommended Part Numbers Part Number 6537S-1-102 6537S-1-502 6537S-1-103 Resistance (Ω) 1,000 5,000 10,000 Part Number 6538S-1-102 6538S-1-202 6538S-1-502 6538S-1-103 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. Resistance (Ω) 1,000 2,000 5,000 10,000 2 CCW WIPER 3 1 CW CLOCKWISE REV. 01/14 *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.