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. Recommended Part Numbers BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. Part Number Resistance () Resolution Part Number Resistance () 3540S-1-201L 200 .042 3541H-1-102L 1,000 FOR OTHER OPTIONS CONSULT FACTORY. 3540S-1-501L 500 .031 3541H-1-202L 2,000 ROHS IDENTIFIER: 3540S-1-102L 1,000 .027 3541H-1-502L 5,000 L = COMPLIANT 3540S-1-202L 2,000 .021 3541H-1-103L 10,000 3540S-1-502L 5,000 .021 3541H-1-203L 20,000 3540S-1-103L 10,000 .019 3541H-1-503L 50,000 3540S-1-203L 20,000 .014 3541H-1-104L 100,000 Speci cations are subject to change without notice. 3540S-1-503L 50,000 .011 Customers should verify actual device performance in their speci c applications. 3540S-1-104L 100,000 .008 *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. *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. 11/12 Hybritron is a registered trademark of Bourns, Inc. Speci cations are subject to change without notice. Customers should verify actual device performance in their speci c applications.