PL IA N T Features M ■ Bushing mount ■ RoHS compliant* *R oH S CO ■ Optional center tap and rear shaft extension ■ Optional AR lug feature ■ Gangable with common or concentric shafts ■ High torque available ■ Non-standard features and specifications available 3540/3541 - Precision Potentiometer Electrical Characteristics1 3540 Wirewound Element Product Dimensions 3541 Hybritron® Element Standard Resistance Range................ 100 to 100 K ohms .....................1 K to 100 K ohms Total Resistance Tolerance.................. ±5 % ...........................................±10 % Independent Linearity .......................... ±0.25 % ......................................±0.25 % Effective Electrical Angle ..................... 3600 ° +10 °, -0 ° .......................3600 ° +10 °, -0 ° Absolute Minimum Resistance/ ........... 1 ohm or 0.1 % maximum ..........0.2 % maximum Minimum Voltage ............................. (whichever is greater) Noise/Output Smoothness .................. 100 ohms ENR maximum ..........0.1 % maximum Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level ......................................... 1,000 VAC minimum ..................1,000 VAC minimum Power Rating (Voltage Limited By Power Dissipation or 447 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 3540S-1/3541H-1 18.3 (.72) 14.35 ± .38 (.565±.015) 5.72 ± .38 (.225±.015) 1 10.32 +.00/.05 DIA. (.406+.000/-.002) 3 3/8 " 32-UNEF-2ATHD .25 X 45 ° CHAMFER (.010) ADJUSTMENT SLOT .81 WIDE (.032) .81±.25 X DEEP (.032±.010) 2 Environmental Characteristics1 Operating Temperature Range ............ -40 °C to +125 °C .......................-40 °C to +125 °C Storage Temperature Range ............... -55 °C to +125 °C .......................-55 °C to +125 °C Temperature Coefficient Over Storage Temperature Range2.......... ±50 ppm/°C maximum/unit .........±100 ppm/°C maximum/unit Vibration .............................................. 15 G ...........................................15 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Shock................................................... 50 G ...........................................50 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Load Life .............................................. 1,000 hours, 2 watts ...................1,000 hours, 2 watts Total Resistance Shift ...................... ±2 % ...........................................±5 % Rotational Life (No Load)..................... 1,000,000 shaft revolutions2 .....5,000,000 shaft revolutions2 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 40 ...........................................IP 40 1.52 (.06) 6.342 + .000/ - .023 (.2497+.0000/-.0009) DIA. 7.92 ± .38 (.312 ± .015) 19.05 ± .38 (.750 ± .015) 20.62 ± .79 (.812 ± .031) OPTIONAL ANTIROTATION LUG (-91) 1.42 X .50 ON 7.4 RADIUS. LENGTH 1.27 FROM MOUNTING SURFACE. (SUGGESTED PANEL HOLE 1.6 DIA.) 30 ° ±5° 6.35 (.25) Mechanical Characteristics1 Stop Strength.......................................................................................... 53 N-cm (75 oz-in.) minimum Mechanical Angle ......................................................................................................3600 ° +10 °, -0 ° Torque Starting & Running @ +25 °C ...............................................................0.49 N-cm (0.7 oz.-in.) max. Starting & Running @ -40 °C................................................................1.76 N-cm (2.5 oz.-in.) max. Mounting ..................................................................................... 170-200 N-cm (15-18 lb.-in.) max. Shaft Runout.................................................................................................0.08 mm (0.003 in.) T.I.R. Lateral Runout ..............................................................................................0.13 mm (0.005 in.) T.I.R. Shaft End Play ..............................................................................................0.30 mm (0.012 in.) T.I.R. Shaft Radial Play ..........................................................................................0.08 mm (0.003 in.) T.I.R. Pilot Diameter Runout ..................................................................................0.08 mm (0.003 in.) T.I.R. Backlash ....................................................................................................................... 1.0 ° maximum Weight .................................................................................................................Approximately 21 gm Terminals ......................................................................................................... Gold-plated solder lugs 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.) ............................................................................... 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 3540S-1-201L 3540S-1-501L 3540S-1-102L 3540S-1-202L 3540S-1-502L 3540S-1-103L 3540S-1-203L 3540S-1-503L 3540S-1-104L Resistance (Ω) 200 500 1,000 2,000 5,000 10,000 20,000 50,000 100,000 Resolution .042 .031 .027 .021 .021 .019 .014 .011 .008 Part Number 3541H-1-102L 3541H-1-202L 3541H-1-502L 3541H-1-103L 3541H-1-203L 3541H-1-503L 3541H-1-104L Resistance (Ω) 1,000 2,000 5,000 10,000 20,000 50,000 100,000 15.88 R MAX. (.625) 12.45 (.49) 22.23 ± .38 (.875 ± .015) MTG. FACE 15.88 DIA. MIN. (.625) TOLERANCES: EXCEPT WHERE NOTED .25 .13 DECIMALS: .XX ± .XXX ± (.010), (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) 2 CCW WIPER 3 1 CW CLOCKWISE BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. ROHS IDENTIFIER: L = COMPLIANT Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 3540/3541 - Precision Potentiometer Panel Thickness Dimensions 2.46 - 3.81 (.097 - .150) PANEL HEX NUT 10.44 ± .07 DIA. (.411 ± .003) R 7.42 (.292) ADDITIONAL HOLE FOR ANTI-ROTATION PIN 1.60 +.08/-.03 DIA. (.063 +.003/-.001) LOCKWASHER POT 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. 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. 11/12 “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.