PL IA NT Features ■ RoHS compliant* ■ Bushing mount *R oH S CO M ■ Sealable ■ Non-standard features and specifications available ■ Optional high torque feature ■ Optional center tap feature ■ Gangable 3500/3501 - Precision Potentiometer Electrical Characteristics1 3500 Wirewound Element 3501 Hybritron® Element Standard Resistance Range.................................................... 50 to 200 K ohms .......................................... 1 K to 200 K ohms Total Resistance Tolerance...................................................... ±3 % .............................................................. ±10 % Independent Linearity .............................................................. ±0.20 % ......................................................... ±0.25 % Effective Electrical Angle ......................................................... 3600 ° +10 °, -0 ° ........................................... 3600 ° +10 °, -2 ° Absolute Minimum Resistance/Minimum Voltage.................... 1 ohm or 0.1 % maximum.............................. 0.2 % maximum (whichever is greater) Noise ...................................................................................... 100 ohms ENR maximum.............................. Output smoothness 0.1 % max. Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level ............................................................................. 1,500 VAC minimum ...................................... 1,500 VAC minimum 70,000 Feet ......................................................................... 400 VAC minimum ......................................... 400 VAC minimum Power Rating (Voltage Limited By Power Dissipation or 325 VAC, Whichever Is Less) +70 °C.................................................................................. 2 watts ........................................................... 2 watts +125 °C................................................................................ 0 watt ............................................................. 0 watt Insulation Resistance (500 VDC) ............................................ 1,000 megohms minimum ............................. 1,000 megohms minimum Resolution................................................................................ See recommended part nos .......................... Essentially infinite Environmental Characteristics1 Operating Temperature Range ................................................ +1 °C to +125 °C ........................................... +1 °C to +125 °C Storage Temperature Range ................................................... -65 °C to +125 °C .......................................... -65 °C to +125 °C Temperature Coefficient Over Storage Temperature Range2 .............................................. ±50 ppm/°C maximum/unit ............................ ±100 ppm/°C maximum/unit Vibration .................................................................................. 20 G ............................................................... 20 G Wiper Bounce ...................................................................... 0.1 millisecond maximum .............................. 0.1 millisecond maximum Total Resistance Shift .......................................................... ±2 % maximum .............................................. ±2 % maximum Voltage Ratio Shift ............................................................... ±0.1 % maximum ........................................... ±0.1 % maximum Shock....................................................................................... 100 G ............................................................. 100 G Wiper Bounce ...................................................................... 0.1 millisecond maximum .............................. 0.1 millisecond maximum Total Resistance Shift .......................................................... ±2 % maximum .............................................. ±2 % maximum Voltage Ratio Shift ............................................................... ±0.1 % maximum ........................................... ±0.1 % maximum Load Life .................................................................................. 1,000 hours, 2 watts ...................................... 1,000 hours, 2 watts Total Resistance Shift .......................................................... ±2 % maximum .............................................. ±5 % maximum Rotational Life (No Load)......................................................... 2,000,000 shaft revolutions2 .......................... 4,000,000 shaft revolutions Total Resistance Shift .......................................................... ±5 % maximum .............................................. ±5 % maximum Moisture Resistance (MIL-STD-202, Method 103, Condition B) Total Resistance Shift .......................................................... ±2 % maximum .............................................. ±5 % maximum IP Rating .................................................................................. IP 65 .............................................................. IP 65 Mechanical Characteristics1 Stop Strength.......................................................................................................................................................................... 67.8 N-cm (96 oz.-in.) minimum Mechanical Angle .......................................................................................................................................................................................... 3600 ° +10 °, -0 ° Torque (Starting & Running) ................................................................................................................................................. 0.42 N-cm (0.6 oz.-in.) maximum Mounting .................................................................................................................................................................. 170-200 N-cm (15-18 lb.-in.) maximum Shaft Runout..................................................................................................................................................................................... 0.05 mm (0.002 in.) T.I.R. Lateral Runout .................................................................................................................................................................................. 0.13 mm (0.005 in.) T.I.R. Shaft End Play .................................................................................................................................................................................. 0.13 mm (0.005 in.) T.I.R. Shaft Radial Play .............................................................................................................................................................................. 0.08 mm (0.003 in.) T.I.R. Pilot Diameter Runout ...................................................................................................................................................................... 0.05 mm (0.002 in.) T.I.R. Backlash ............................................................................................................................................................................................................1.0 ° maximum Weight ..................................................................................................................................................................................................... Approximately 28 gm Terminals .................................................................................................................................... Gold-plated solder lugs or turrets (see Product Dimensions) 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) ....................................................................................................................................................2 cups 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. 2Consult manufacturer for complete specification details. Recommended Part Numbers Part Number 3500S-1-102L 3500S-1-502L 3500S-1-103L 3500S-2-102L 3500S-2-502L 3500S-2-103L Resistance (Ω) Resolution (%) 1,000 5,000 10,000 1,000 5,000 10,000 .030 .018 .019 .030 .018 .019 Part Number 3501H-1-102L 3501H-1-502L 3501H-1-103L Resistance (Ω) 1,000 5,000 10,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. ROHS IDENTIFIER: L = COMPLIANT “Hybritron” is a registered trademark of Bourns, Inc. *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. Customers should verify actual device performance in their specific applications. 3500/3501 - Precision Potentiometer Product Dimensions Panel Thickness Dimensions 3500S 3501H WIPER 5.46 ± .76 (.215 ± .030) CCW 3/8 "-32 2A THD UNEF .25 X 45 ° CHAMFER (.010) 10.32 + .00/ - .05 (.4062+.000/-.002) PILOT DIA. 1.52 (.06) CW 23.62 ± .25 (.930 ± .010) 20.50 ± .38 (.807 ± .015) 2.54 (.10) MIN. WIPER CW CCW 3/8 "-32 2A THD UNEF .25 X 45 ° CHAMFER (.010) 10.32 + .00/ - .05 (.4062+.000/-.002) PILOT DIA. 1.52 (.06) PANEL HEX NUT .6.34 + .00/- .01 DIA. (.249+.0000/-.0003) 8.0 ± .38 (.315 ± .015) 25.4 ± .51 (1.00 ± .02) 12.7 REF. (1/2) 12.7 REF. (1/2) 20.64 ±.79 (13/16 ± 1/32) 25.4 ± .51 (1.00 ± .02) 45 ° ± 5 ° 8.9 (.35) 45 ° ± 5 ° .6.34 + .00/- .01 DIA. (.249+.0000/-.0003) 8.0 ± .38 (.315 ± .015) 20.64 ±.79 (13/16 ± 1/32) 22.23 (7/8) 11/16 (17.46) 3500S-2-RC 13/16 (20.64) 3501H-1-RC 13/16 (20.64) .49 (12.45) LOCATION OF OPTIONAL 7.37 A/R PIN ON R (.29) ADJUSTMENT SLOT .81 WIDE X (.032) .81 ± .25 DEEP (.032 ± .010) 10.44 ± .07 DIA. (.411 ± .003) R 7.42 (.292) ADDITIONAL HOLE FOR ANTI-ROTATION PIN 1.60 +.08/-.03 DIA. (.063 +.003/-.001) Panel thickness and hole diameters are recommended for best fit. However, customers may adjust the dimensions to suit their specific application. WIPER 3 1 R MAX. 16.0 (.63) Anti-rotation pin hole is shown at six o'clock position for reference only. The actual location is determined by the customer's application. Refer to the front view of the potentiometer to see the location of the optional A/R pin. TOLERANCES: EXCEPT WHERE NOTED .25 .13 DECIMALS: .XX ± .XXX ± (.010), (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) 2 POT 8.9 (.35) 22.23 (7/8) NOTE: SHAFT LENGTH VARIATIONS 3500S-1-RC .76 (.03) .467 (.184) LOCKWASHER .76 45 ° ± 5 ° (.03) 45 ° ± 5 ° LOCATION OF OPTIONAL 7.37 A/R PIN ON R (.29) ADJUSTMENT SLOT .81 WIDE X (.032) .81 ± .25 DEEP (.032 ± .010) 16.0 (.63) R MAX. CCW 2.46 - 3.81 (.097 - .150) CW DIMENSIONS: MM (INCHES) TOLERANCES: ± 0.127 (.005) CLOCKWISE REV. 06/12 “Hybritron” is a registered trademark of Bourns, Inc. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.