Features Bushing mount Optional AR pin feature Non-standard features and speci cations available Gangable RoHS compliant* 3543/3545 - Precision Potentiometer 1 Electrical Characteristics 3543 3-Turn 3545 5-Turn Product Dimensions Standard Resistance Range................20 to 50 K ohms .........................50 to 50 K ohms 3543S-1/3545S-1 Total Resistance Tolerance ..................5 % ...........................................5 % 18.3 Independent Linearity ..........................0.25 % ......................................0.25 % (.72) Effective Electrical Angle .....................1080 +10 , -0 .......................1800 +10 , -0 14.35 .38 Absolute Minimum Resistance/ ...........1 ohm or 0.1 % maximum ..........1 ohm or 0.1 % maximum (.565 .015) Minimum Voltage .............................(whichever is greater).................(whichever is greater) 5.72 .38 Noise ..................................................100 ohms ENR maximum ..........100 ohms ENR maximum (.225 .015) Dielectric Withstanding Voltage (MIL-STD-202, Method 301) 10.31+ .00/ - .05 Sea Level .........................................1,000 VAC minimum ..................1,000 VAC minimum 1 DIA. (.406+.000/-.002) Power Rating (Voltage Limited By Power Dissipation or 3 3/8 32-UNEF-2ATHD 224 VAC 3543 or 273 VAC 3545 , Whichever Is Less) +70 C ..............................................1 watt..........................................1.5 watt 2 .25 +125 C ............................................0 watt..........................................0 watt X 45 CHAMFER (.010) Insulation Resistance (500 VDC) ........1,000 megohms minimum ..........1,000 megohms minimum ADJUSTMENT Resolution............................................See recommended part nos....See recommended part nos81 SLOT WIDE (.032) 1 Environmental Characteristics .81.25 X DEEP 1.52 (.032.0160) Operating Temperature Range ............+1 C to +125 C ........................+1 C to +125 C (.06) 6.342 + .000/ - .023 Storage Temperature Range ...............-55 C to +125 C .......................-55 C to +125 C 7.92 .38 (.2497+.0000/-.0009) Temperature Coef cient Over (.312 .015) 2 DIA. Storage Temperature Range ..........50 ppm/C maximum/unit .........50 ppm/C maximum/unit 19.05 .38 20.62 .79 Vibration ..............................................15 G ...........................................15 G (.750 .015) (.812 .031) Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum Shock...................................................50 G ...........................................50 G ADD .75 (19 MM) FOR ADDITIONAL CUPS. Wiper Bounce ..................................0.1 millisecond maximum ...........0.1 millisecond maximum Load Life ..............................................1,000 hours, 1 watt.....................1,000 hours, 1.5 watts Total Resistance Shift ......................2 % maximum ..........................2 % maximum OPTIONAL ANTIROTATION LUG 1.42 X .50 7.4 Rotational Life (No Load).....................300,000 shaft revolutions ...........500,000 shaft revolutions (-91) ON RADIUS (.056 X .02) (.29) Total Resistance Shift ......................5 % maximum ..........................5 % maximum LENGTH 1.27 FROM MOUNTING SURFACE. Moisture Resistance (MIL-STD-202, Method 103, Condition B) 1.6 (SUGGESTED PANEL HOLE DIA.) Total Resistance Shift ......................2 % maximum ..........................2 % maximum (.063) IP Rating ..............................................IP 40 ...........................................IP 40 30 5 6.35 1 Mechanical Characteristics (.25) 15.88 Stop Strength.................................................................................................53 N-cm (75 oz.-in.) min. R MAX. (.625) Mechanical Angle ................................................. 1080 +10 , -0 (3543) 1800 +10 , -0 (3545) 12.45 Torque (Starting & Running) .....................................................................0.35 N-cm (0.5 oz.-in.) max. (.49) Mounting .............................................................................................. 170-200 N-cm (15-18 lb.-in.) 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 ..............................................................................................0.25 mm (0.010 in.) T.I.R. Shaft Radial Play ..........................................................................................0.08 mm (0.003 in.) T.I.R. MTG. FACE Pilot Diameter Runout ..................................................................................0.08 mm (0.003 in.) T.I.R. 15.88 22.23 .38 Backlash ....................................................................................................................... 1.0 maximum DIA. MIN. (.625) (.875 .015) Weight .................................................................................................................Approximately 21 gm Terminals ......................................................................................................... Gold-plated solder lugs Soldering Condition TOLERANCES: EXCEPT WHERE NOTED Manual Soldering...........................................................96.5Sn/3.0Ag/0.5Cu solid wire or no-clean .25 .13 rosin cored wire 370 C (700 F) max. for 3 seconds DECIMALS: .XX .XXX (.010), (.005) Wave Soldering .................... 96.5Sn/3.0Ag/0.5Cu solder with no-clean ux 260 C (500 F) max. FRACTIONS: 1/64 for 5 seconds MM Wash processes ..................................................................................................Not recommended DIMENSIONS: (IN.) Marking ................................................. Manufacturers name and part number, resistance value and tolerance, linearity tolerance, wiring diagram, and date code. Ganging (Multiple Section Pots.) ............................................................................... 2 cups maximum WIPER 2 Hardware ....................................................One lockwasher (H-37-2) and one mounting nut (H-38-2) is shipped with each potentiometer. CCW CW 1 3 1 At room ambient: +25 C nominal and 50 % relative humidity nominal, except as noted. CLOCKWISE 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 () Resolution (%) FOR SERVO MOUNT VERSION AND OTHER OPTIONS CONSULT FACTORY. 3543S-1-102L 1,000 .077 3545S-1-102L 1,000 .043 3543S-1-202L 2,000 .062 3545S-1-202L 2,000 .044 ROHS IDENTIFIER: L = COMPLIANT 3543S-1-502L 5,000 .047 3545S-1-502L 5,000 .038 3543S-1-103L 10,000 .040 3545S-1-103L 10,000 .029 *RoHS Directive 2015/863, Mar 31, 2015 and Annex. WARNING Specications are subject to change without notice. Users should verify actual device performance in their specic Cancer and Reproductive Harm applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the www.P65Warnings.ca.gov last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. *RoHS COMPLIANT 3543/3545 - 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 POT DIA. (.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) Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com EMEA: Tel: +36 88 885 877 Email: eurocus bourns.com The Americas: Tel: +1-951 781-5500 Email: americus bourns.com www.bourns.com 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 legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.