features servo mount excellent resolution non-standard features and speci cations available small diameter high rotational life rohs compliant* 3750/3751 - precision potentiometer 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 .................. ? % ...........................................?0 % independent linearity .......................... ?.25 % ......................................?.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 ? .............................................. 1 watt..........................................1 watt +125 ? ............................................ 0 watt..........................................0 watt insulation resistance (500 vdc) ........ 1,000 megohms minimum ..........1,000 megohms minimum resolution............................................ see recommended part nos. .....essentially in nite environmental characteristics 1 operating temperature range ............ +1 ? to +125 ? ........................+1 ? to +105 ? storage temperature range ............... -65 ? to +125 ? .......................-55 ? to +105 ? temperature coef cient over storage temperature range 2 ......... ?0 ppm/? maximum/unit .........?00 ppm/? 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 ...................... ? % maximum ..........................? % maximum rotational life (no load)..................... 1,000,000 shaft revolutions 2 ..... 10,000,000 shaft revolutions 2 total resistance shift ...................... ? % maximum ..........................? % maximum moisture resistance (mil-std-202, method 103, condition b) total resistance shift ...................... ? % maximum ..........................? % maximum ip rating .............................................. ip 40 ...........................................ip 40 mechanical characteristics 1 stop strength.......................................................................................... 14 n-cm (20 oz-in.) mini mum mechanical angle ......................................................................................................3600 ?+ 20 ? -0 torque starting .................................................................................................0.35 n-cm (0.5 oz.-i n.) 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-plate d turret lugs soldering condition manual soldering .................................96.5sn/3.0ag/0.5cu solid wire or no-clean rosin cored wire 370 ? (700 ?) max. for 3 seconds wave soldering ........................................................ 96.5sn/3.0ag/0.5cu solder with no-clean ux 260 ? (500 ?) max. for 5 seconds wash processes ..................................................................................................not recommend ed marking ................................................. manufacturer? 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 ? nominal and 50 % relative humidity nominal, except as noted. 2 consult manufacturer for complete speci cation details. product dimensions 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/?.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) *rohs compliant boldface listings are in stock and readily available through distribution. for other options consult factory. rohs identifier: l = compliant* ?ybritron?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. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. rev. 06/12
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