3750

oH V SC AV ER OM AI SIO PL LA N IA BL S NT E Features ■ ■ ■ ■ ■ Servo mount Excellent resolution Non-standard features and specifications available Small diameter High rotational life Models 3750 and 3751 are currently available, although not recommended for new designs. *R 3750/3751 - Precision Potentiometer Electrical Characteristics1 3750 Wirewound Element 3751 Hybritron¤ Element 3750/3751 28.40 ± .38 (1.118 ± .015) 1.57 + .25/ - .13 (.062 + .010/ - .005) 3.18 + .25/ - .13 (.125 + .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) 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 9.53 ± .80 (3/8 ± 1/32) 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 5.08 + .25/ - .12 (.20 + .010/- .005) 3.18 ± .40 (1/8 ± 1/64) 2.375 + .000/- .008 (.0935 + .000/- .0003) 10.71 (27/64) 12.7 ± .40 (1/2 ± 1/64) Mechanical 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....................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.) .................................................................................1 cup maximum 1 2 TOLERANCES: EXCEPT WHERE NOTED .25 .13 DECIMALS: .XX ± (.010) .XXX ± (.005) MM DIMENSIONS: (IN) FRACTIONS: ±1/64 2 CCW WIPER 1 CLOCKWISE 3 CW At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted. Consult manufacturer for complete specification details. Recommended Part Numbers Part Number 3750S-1-102L 3750S-1-202L 3750S-1-502L 3750S-1-103L 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. Resistance (Ω) 1,000 2,000 5,000 10,000 Resolution 0.05 0.04 0.04 0.02 Part Number 3751H-1-102L 3751H-1-202L 3751H-1-502L 3751H-1-103L Resistance (Ω) 1,000 2,000 5,000 10,000 BOLDFACE LISTINGS ARE IN STOCK AND READILY AVAILABLE THROUGH DISTRIBUTION. FOR OTHER OPTIONS CONSULT FACTORY. TERMINALS: L = RoHS COMPLIANT BLANK = STANDARD