oH VE S CO AV R M AI SIO PL LA N IA BL S NT E Features ■ *R ■ ■ ■ Model 3543 is currently available, although not recommended for new designs. Model 3547 is preferred. Bushing mount Optional AR pin feature Non-standard features and specifications available Gangable Model 3545 is currently available, although not recommended for new designs. Model 3548 is preferred. 3543/3545 - Precision Potentiometer Electrical Characteristics1 3543 3-Turn 3543S-1/3545S-1 3545 5-Turn Standard Resistance Range ..............20 to 50 K ohms ......................50 to 50 K ohms Total Resistance Tolerance ................±5 % ........................................±5 % Independent Linearity ........................±0.25 % ....................................±0.25 % Effective Electrical Angle ....................1080 ° +10 °, -0 ° ....................1800 ° +10 °, -0 ° Absolute Minimum Resistance/..........1 ohm or 0.1 % maximum........1 ohm or 0.1 % maximum Minimum Voltage (whichever is greater) (whichever is greater) Noise ..................................................100 ohms ENR maximum ........100 ohms ENR 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 224 VAC [3543] or 273 VAC [3545], Whichever Is Less) +70 °C ............................................1 watt........................................1.5 watt +125 °C ..........................................0 watt........................................0 watt Insulation Resistance (500 VDC) ........1,000 megohms minimum........1,000 megohms minimum Resolution ............................................See recommended part nos. ....See recommended part nos. Environmental Characteristics1 Operating Temperature Range ..........+1 °C to +125 °C ......................+1 °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 ......±50 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, 1 watt ..................1,000 hours, 1.5 watts Total Resistance Shift ....................±2 % maximum ........................±2 % maximum Rotational Life (No Load)....................300,000 shaft revolutions ........500,000 shaft revolutions Total Resistance Shift ....................±5 % maximum ........................±5 % maximum Moisture Resistance (MIL-STD-202, Method 103, Condition B) Total Resistance Shift ....................±2 % maximum ........................±2 % maximum IP Rating ............................................IP 40 ........................................IP 40 Mechanical Characteristics1 Stop Strength.................................................................................................53 N-cm (75 oz.-in.) min. Mechanical Angle..................................................1080 ° +10 °, -0 ° (3543); 1800 ° +10 °, -0 ° (3545) Torque (Starting & Running)......................................................................0.35 N-cm (0.5 oz.-in.) max. 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. 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....................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter. Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean flux. 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. 18.3 (.72) 14.35 ± .38 (.565 ± .015) 10.31+ .00/ - .05 DIA. (.406+.000/-.002) 1 3 3/8 " 32-UNEF-2ATHD 2 .25 X 45 ° CHAMFER (.010) At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. Consult manufacturer for complete specification details. ADJUSTMENT .81 SLOT WIDE (.032) X .81±.25 DEEP (.032±.0160) 1.52 (.06) 7.92 ± .38 (.312 ± .015) 19.05 ± .38 (.750 ± .015) 6.342 + .000/ - .023 (.2497+.0000/-.0009) DIA. 20.62 ± .79 (.812 ± .031) ADD .75 (19 MM) FOR ADDITIONAL CUPS. OPTIONAL ANTIROTATION LUG (-91) 1.42 X .50 ON 7.4 RADIUS (.056 X .02) (.29) LENGTH 1.27 FROM MOUNTING SURFACE. (SUGGESTED PANEL HOLE 1.6 DIA.) (.063) 30 ° ±5° 6.35 (.25) 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 1 5.72 ± .38 (.225 ± .015) WIPER 3 1 CW CLOCKWISE 2 Recommended Part Numbers Part Number* Resistance (Ω) Resolution (%) 3543S-1-102L 3543S-1-202L 3543S-1-502L 3543S-1-103L 1,000 2,000 5,000 10,000 .077 .062 .047 .040 Part Number 3545S-1-102L 3545S-1-202L 3545S-1-502L 3545S-1-103L Resistance (Ω) 1,000 2,000 5,000 10,000 Resolution (%) .043 .044 .038 .029 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR SERVO MOUNT VERSION AND OTHER OPTIONS CONSULT FACTORY. TERMINALS: L = RoHS COMPLIANT BLANK = STANDARD REV. 06/06 *RoHS Directive 2002/95/EC Jan 27 2003 including Annex Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.