PL IA NT Features CO M ■ Servo mount *R oH S ■ Excellent resolution ■ Non-standard features and specifications available ■ Small diameter ■ High rotational life ■ RoHS compliant* 3750/3751 - Precision Potentiometer Electrical Characteristics1 3750 Wirewound Element 3751 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 °, -4 ° Absolute Minimum Resistance/ ........... 1 ohm or 0.1 % maximum ..........Minimum voltage Minimum Voltage ............................. (whichever is greater).................0.2 % maximum Noise .................................................. 500 ohms ENR maximum ..........Output smoothness 0.15 % 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 315 VAC, Whichever Is Less) +70 °C.............................................. 1 watt..........................................1 watt +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 Environmental Characteristics1 Operating Temperature Range ............ +1 °C to +125 °C ........................+1 °C to +105 °C Storage Temperature Range ............... -65 °C to +125 °C .......................-55 °C to +105 °C Temperature Coefficient Over Storage Temperature Range2 ......... ±50 ppm/°C maximum/unit .........±100 ppm/°C maximum/unit Vibration .............................................. 20 G ...........................................20 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Shock................................................... 100 G .........................................100 G Wiper Bounce .................................. 0.1 millisecond maximum ...........0.1 millisecond maximum Load Life .............................................. 1,000 hours, 1 watt.....................1,000 hours, 1 watt Total Resistance Shift ...................... ±2 % maximum ..........................±5 % maximum Rotational Life (No Load)..................... 1,000,000 shaft revolutions2 .....10,000,000 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 Mechanical Product Dimensions 3750/3751 28.40 .38 (1.118 .015) 3.18 + .25/ - .13 (.125 + .010/– .005) 1.57 + .25/ - .13 (.062 + .010/ - .005) 1.57 + .25/ - .03 (.062 + .010/- .005) 9.53 + .00/ - .03 (.375 + .010/- .005) 12.70 + .30/- .20 (.500 + .010/- .007) 10.16 DIA. MAX. (.400) 30.16 MAX. (1-3/16) 9.53 .80 (3/8 1/32) 5.08 + .25/ - .12 (.20 + .010/- .005) 3.18 .40 (1/8 1/64) 10.71 (27/64) 2.375 + .000/- .008 (.0935 + .000/- .0003) 12.7 .40 (1/2 1/64) Characteristics1 Stop Strength.......................................................................................... 14 N-cm (20 oz-in.) minimum Mechanical Angle ......................................................................................................3600 ° +20 °, -0 ° Torque Starting .................................................................................................0.35 N-cm (0.5 oz.-in.) max. Running ................................................................................................0.21 N-cm (0.3 oz.-in.) max. Shaft Runout.................................................................................................0.08 mm (0.003 in.) T.I.R. Lateral Runout ..............................................................................................0.08 mm (0.003 in.) T.I.R. Shaft End Play ..............................................................................................0.13 mm (0.005 in.) T.I.R. Shaft Radial Play ..........................................................................................0.05 mm (0.002 in.) T.I.R. Pilot Diameter Runout ..................................................................................0.05 mm (0.002 in.) T.I.R. Backlash ....................................................................................................................... 1.0 ° maximum Weight ..................................................................................................................Approximately 8.5 G Terminals ...........................................................................................................Gold-plated turret 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.) ................................................................................. 1 cup maximum TOLERANCES: EXCEPT WHERE NOTED .25 .13 DECIMALS: .XX (.010) .XXX (.005) MM DIMENSIONS: (IN) FRACTIONS: 1/64 2 CCW WIPER 3 1 CW CLOCKWISE 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 Resistance (Ω) Resolution Part Number Resistance (Ω) 3750S-1-102L 3750S-1-202L 3750S-1-502L 3750S-1-103L 1,000 2,000 5,000 10,000 0.05 0.04 0.04 0.02 3751H-1-102L 3751H-1-202L 3751H-1-502L 3751H-1-103L 1,000 2,000 5,000 10,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. ROHS IDENTIFIER: L = COMPLIANT* REV. 06/12 “Hybritron” is a registered trademark of Bourns, Inc. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.