*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. 3750/3751 - precision potentiometer features servo mount excellent resolution non-standard features and specifications available small diameter high rotational life electrical characteristics 1 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 characteristics 1 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 range 2 ........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 revolutions 2 ....10,000,000 shaft revolutions 2 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 characteristics 1 stop strength ...............................................................................................14 n-cm (20 oz-in.) minimum mechanical angle ......................................................................................................3600 +2 0 , -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 ...................................................................................................................approx imately 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 ..................................................manufacturers name and part number, resistance value and tolerance, linearity tolerance, wiring diagram, and date code ganging (multiple section pots.)..................................................................................1 cup maximum 1 at room ambient: +25 c nominal and 50 % relative humidity nominal, except as noted. 2 consult manufacturer for complete specification details. recommended part numbers part number resistance ( ? ) resolution 3750s-1-102l 1,000 0.05 3750s-1-202l 2,000 0.04 3750S-1-502L 5,000 0.04 3750s-1-103l 10,000 0.02 part number resistance ( ? ) 3751h-1-102l 1,000 3751h-1-202l 2,000 3751h-1-502l 5,000 3751h-1-103l 10,000 3750/3751 28.40 .38 (1.118 .015) 3.18 + .25/ - .13 (.125 + .010/C .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) 9.53 .80 (3/8 1/32) max. dia. max. 5.08 + .25/ - .12 (.20 + .010/- .005) 3.18 .40 (1/8 1/64) 10.71 (27/64) 12.7 .40 (1/2 1/64) 2.375 + .000/- .008 (.0935 + .000/- .0003) tolerances: except where noted decimals: .xx .xxx dimensions: fractions: 1/64 1 3 cw clockwise ccw 2 wiper 10.16 (.400) 30.16 (1-3/16) .25 (.010) .13 (.005) mm (in) boldface listings are in stock and readily available through distribution. for other options consult factory. rohs identifier: l = compliant blank = non-compliant *rohs compliant versions available rev. 06/09
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