Features Bushing mount RoHS compliant* Optional center tap and rear shaft extension Optional AR lug feature Gangable with common or concentric shafts High torque available Non-standard features and speci cations available 3540/3541 - Precision Potentiometer 1 Electrical Characteristics 3540 Wirewound Element 3541 Hybritron Element Product Dimensions Standard Resistance Range................100 to 100 K ohms .....................1 K to 100 K ohms 3540S-1/3541H-1 Total Resistance Tolerance ..................5 % ...........................................10 % 18.3 Independent Linearity ..........................0.25 % ......................................0.25 % Effective Electrical Angle .....................3600 +10 , -0 .......................3600 +10 , -0 (.72) Absolute Minimum Resistance/ ...........1 ohm or 0.1 % maximum ..........0.2 % maximum 14.35 .38 Minimum Voltage .............................(whichever is greater) (.565.015) 5.72 .38 Noise/Output Smoothness ..................100 ohms ENR maximum ..........0.1 % maximum Dielectric Withstanding Voltage (MIL-STD-202, Method 301) (.225.015) 1 Sea Level .........................................1,000 VAC minimum ..................1,000 VAC minimum 10.32 +.00/.05 DIA. Power Rating (Voltage Limited By Power Dissipation or 447 VAC, Whichever Is Less) 3 (.406+.000/-.002) +70 C ..............................................2 watts ........................................2 watts 3/8 32-UNEF-2ATHD +125 C ............................................0 watt..........................................0 watt 2 .25 Insulation Resistance (500 VDC) ........1,000 megohms minimum ..........1,000 megohms minimum X 45 CHAMFER (.010) Resolution............................................See recommended part nos....Essentially in nite ADJUSTMENT .81 SLOT WIDE 1 Environmental Characteristics (.032) .81.25 Operating Temperature Range ............-40 C to +125 C .......................-40 C to +125 C X DEEP (.032.010) 1.52 Storage Temperature Range ...............-55 C to +125 C .......................-55 C to +125 C (.06) Temperature Coef cient Over 6.342 + .000/ - .023 2 (.2497+.0000/-.0009) Storage Temperature Range ..........50 ppm/C maximum/unit .........100 ppm/C maximum/unit 7.92 .38 DIA. Vibration ..............................................15 G ...........................................15 G (.312 .015) Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum 19.05 .38 Shock...................................................50 G ...........................................50 G 20.62 .79 (.750 .015) (.812 .031) 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 % 2 2 OPTIONAL ANTIROTATION LUG Rotational Life (No Load).....................1,000,000 shaft revolutions .....5,000,000 shaft revolutions (-91) 1.42 X .50 ON 7.4 RADIUS. Total Resistance Shift ......................5 % maximum ..........................5 % maximum LENGTH 1.27 FROM MOUNTING SURFACE. Moisture Resistance (MIL-STD-202, Method 103, Condition B) (SUGGESTED PANEL HOLE 1.6 DIA.) Total Resistance Shift ......................2 % maximum ..........................5 % maximum 30 IP Rating ..............................................IP 40 ...........................................IP 40 5 6.35 (.25) 1 Mechanical Characteristics 15.88 R MAX. Stop Strength..........................................................................................53 N-cm (75 oz-in.) minimum (.625) 12.45 Mechanical Angle ......................................................................................................3600 +10 , -0 (.49) 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. MTG. FACE Shaft End Play ..............................................................................................0.30 mm (0.012 in.) T.I.R. 15.88 22.23 .38 DIA. MIN. Shaft Radial Play ..........................................................................................0.08 mm (0.003 in.) T.I.R. (.625) (.875 .015) Pilot Diameter Runout ..................................................................................0.08 mm (0.003 in.) T.I.R. Backlash ....................................................................................................................... 1.0 maximum Weight .................................................................................................................Approximately 21 gm TOLERANCES: EXCEPT WHERE NOTED Terminals ......................................................................................................... Gold-plated solder lugs .25 .13 Soldering Condition DECIMALS: .XX .XXX (.010), (.005) Manual Soldering...........................................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean FRACTIONS: 1/64 rosin cored wire 370 C (700 F) max. for 3 seconds MM Wave Soldering .................... 96.5Sn/3.0Ag/0.5Cu solder with no-clean ux 260 C (500 F) max. DIMENSIONS: (IN.) for 5 seconds Wash processes ..................................................................................................Not recommended Marking ................................................. Manufacturers name and part number, resistance value and tolerance, linearity tolerance, wiring diagram, and date code WIPER 2 Ganging (Multiple Section Pots.) ............................................................................... 2 cups maximum Hardware ....................................................One lockwasher (H-37-2) and one mounting nut (H-38-2) CCW CW 1 3 is shipped with each potentiometer. CLOCKWISE 1 At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted. 2 Consult manufacturer for complete speci cation details. BOLDFACE LISTINGS ARE IN STOCK AND READILY Recommended Part Numbers AVAILABLE THROUGH DISTRIBUTION. Part Number Resistance () Resolution Part Number Resistance () FOR OTHER OPTIONS CONSULT FACTORY. 3540S-1-201L 200 .042 3541H-1-102L 1,000 ROHS IDENTIFIER: 3540S-1-501L 500 .031 3541H-1-202L 2,000 L = COMPLIANT 3540S-1-102L 1,000 .027 3541H-1-502L 5,000 3540S-1-202L 2,000 .021 3541H-1-103L 10,000 WARNING 3540S-1-502L 5,000 .021 3541H-1-203L 20,000 Cancer and Reproductive Harm 3540S-1-103L 10,000 .019 3541H-1-503L 50,000 3540S-1-203L 20,000 .014 3541H-1-104L 100,000 www.P65Warnings.ca.gov 3540S-1-503L 50,000 .011 Specications are subject to change without notice. Users should verify actual device performance in their specic applications. 3540S-1-104L 100,000 .008 The products described herein and this document are subject to specic disclaimers as set forth on the last page *RoHS Directive 2015/863, Mar 31, 2015 and Annex. of this document, and at www.bourns.com/legal/disclaimer.pdf. *RoHS COMPLIANT 3540/3541 - Precision Potentiometer Panel Thickness Dimensions 2.46 - 3.81 (.097 - .150) PANEL HEX NUT 10.44 .07 DIA. (.411 .003) 7.42 R (.292) ADDITIONAL HOLE FOR ANTI-ROTATION PIN LOCKWASHER 1.60 +.08/-.03 DIA. POT (.063 +.003/-.001) 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. 0.127 MM DIMENSIONS: TOLERANCES: (.005) (INCHES) REV. 10/19 Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic disclaimers as set forth on the last page of this document, and at www.bourns.com/legal/disclaimer.pdf.