PL IA NT CO M *R oH S Features ■ Bushing mount ■ Shaft supported by front sleeve bearing ■ Non-standard features and specifications available 6657 - Precision Potentiometer Electrical Characteristics1 Product Dimensions Standard Resistance Range....................................................................................1 K to 100 K ohms Total Resistance Tolerance......................................................................................................... ±10 % Independent Linearity ................................................................................................................... ±1 % Effective Electrical Angle .......................................................................................................340 ° ±3 ° End Voltage .................................................................................................................0.5 % maximum Output Smoothness ..................................................................................................................... 0.1 % Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level .............................................................................................................750 VAC minimum Power Rating (Voltage Limited By Power Dissipation or 300 VAC, Whichever is Less) +70 °C ................................................................................................................................ 1.5 watts +125 °C....................................................................................................................................0 watt Insulation Resistance (500 VDC) ................................................................ 1,000 megohms minimum Resolution ................................................................................................................Essentially infinite 1.57 (.062) 10.317+.000/-.051 (.4062+.000/-.002) DIA. SHAFT 16.46 ± .38 (.648 ± .015) 3/8 "-32 UNEF-2ATHD 6.345 +.000/-.008 (.2498 +.0000/-.0003) DIA. SHAFT 33.34 (1-5/16) DIA. 45 ° ± 5 ° .38 X (.015) CHAMFER Environmental Characteristics1 9.53 ± .79 (3/8± 1/32) Operating Temperature Range ................................................................................. -40 °C to +125 °C Storage Temperature Range .................................................................................... -65 °C to +125 °C Temperature Coefficient Over Storage Temperature Range ...........................±500 ppm/°C maximum Vibration ........................................................................................................................................15 G Wiper Bounce ........................................................................................... 0.1 millisecond maximum Total Resistance Shift ...............................................................................................±5 % maximum Voltage Ratio Shift .................................................................................................±0.5 % maximum Shock.............................................................................................................................................50 G 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 IP Rating ....................................................................................................................................... IP 40 3.18 (1/8) 22.23 ± .79 (7/8 ± 1/32) SHAFT SLOT 1.19 WIDE (.047) 1.60 DEEP X (.063) UR BO NS 2 6.35 R (.25) CW 3 1 30 ° ± 3 ° TYP. Mechanical Characteristics1 Mechanical Angle ............................................................................................................... Continuous Torque (Starting & Running) ............................................................. 0.40 N-cm (0.5 oz.-in.) maximum Mounting ..............................................................................170-200 N-cm (15-18 lb.-in.) maximum Shaft Runout...............................................................................................0.025 mm (0.001 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. Backlash ....................................................................................................................... 0.1 ° maximum Weight ........................................................................................................................................ 32 gm 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 Potentiometers) ................................................................. 1 cup maximum Hardware .................................................... One lockwasher (H-37-2) and one mounting nut (H-38-2) is shipped with each potentiometer. 1At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. TOLERANCES: EXCEPT WHERE NOTED .51 .13 DECIMALS: .XX ± .XXX ± (.02), (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) 2 CCW WIPER 3 1 CW CLOCKWISE Recommended Part Numbers Part Number* Resistance (Ω) 6657S-1-102 6657S-1-202 6657S-1-502 6657S-1-103 1,000 2,000 5,000 10,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. ROHS IDENTIFIER: L = COMPLIANT BLANK = NON-COMPLIANT *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 6657 - Precision Potentiometer Panel Thickness Dimensions 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. Customers should verify actual device performance in their specific applications