panel controls sc1005 bourns manufacturers representatives corporate distributor product managers americas sales team asia sales team europe sales team january, 2010 model 3862 new contact spring design as a follow up to the previous update issued in october 2009, sensors and controls product line is pleased to announce the quali cation and nal release of our model 3862 panel control with a new contact spring design. as previously announced, our carbon contact supplier had been purchased by another company, and had subsequently ceased production of the carbon contact thereby prompting bourns to redesign the contact to a metal spring. production is now underway with back orders being lled on a priority basis. for those customers requiring quali cation data and/or samples for evaluation, please contact your local bourns sales representative. should you have any questions regarding this notice, please feel free to contact me or any of our field application engineers. western us and can ada ............. paul snow ...............+1-801-985-8500 .......paul.snow@bourns.com eastern us and canada ............... david johnson .......+1-951-781-5445 .......david.johnson@bourns.com uk, ireland and scandinavia ....... carl queen .............+353-214-515-225 .....carl.queen@bourns.com central and southern europe ..... helmut deuter .......+49-8104-646820 ......helmut.deuter@bourns.com france ............................................ andreas fessler .......+41-41-7685-551 .......andreas.fessler@bourns.com asia, australia and india .............. jeff wu ...................+886-2-2562-4117....jeff.wu@bourns.com best regards, emill melliz product line manager bourns?sensors & controls product line resistive products division e-mail: emill.melliz@bourns.com
features small diameter wide resistance range good resolution linear tapers cermet element 3862 - 1/2 ?diameter single-turn panel control *rohs directive 2002/95/ec jan 27 2003 including annex speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. initial electrical characteristics 1 standard resistance range ..................................................................................................... ............................................100 ohms to 1 megohm total resistance tolerance .................................................................................................... ........................................................... (a taper) 10 % (h taper) 5% independent linearity ......................................................................................................... ............................................................................... 5 % absolute minimum resistance ................................................................................................... ................................................... 2 ohms maximum effective electrical angle .................................................................................................... ...................................................................... 260 10 contact resistance variation .................................................................................................. ...................... 3 % or 6 ohms (whichever is greater) dielectric withstanding voltage (mil-std-202, method 301) sea level .................................................................................................................... ............................................................ 750 vac minimum 70,000 feet ............................................................................................................................... .............................................. 350 vac minimum insulation resistance (500 vdc) ............................................................................................... ....................................... 1,000 megohms minimum power rating (voltage limited by power dissipation or 350 vac, whichever is less) +70 c........................................................................................................................ ................................................................................. 1 watt +125 c....................................................................................................................... ................................................................................ 0 watt theoretical resolution ........................................................................................................ ........................................................... essentially in? nite environmental characteristics 1 operating temperature range ................................................................................................... ................................................... -40 c to +125 c storage temperature range ..................................................................................................... .................................................... -65 c to +125 c temperature coef? cient over storage temperature range ......................................................................................... ....................... 150 ppm/c vibration .................................................................................................................... ........................................................................................ 20 g total resistance shift ....................................................................................................... .......................................................... 2 % maximum voltage ratio shift .......................................................................................................... ............................................................ 6 % maximum shock ......................................................................................................................... ........................................................................................ 50 g total resistance shift ....................................................................................................... .......................................................... 2 % maximum voltage ratio shift .......................................................................................................... ............................................................ 6 % maximum load life ............................................................................................................................... ...................................................................1,000 hours total resistance shift ....................................................................................................... .......................................................... 3 % maximum rotational life (c & n bushing) no load ....................................................................................... ......................................................50,000 cycles total resistance shift ....................................................................................................... .......................................................... 5 % maximum contact resistance variation ................................................................................................. ..................................................................... 3 % moisture resistance (mil-std-202, method 106, condition b) total resistance shift ....................................................................................................... .......................................................... 2 % maximum insulation resistance (500 vdc) .............................................................................................. ..................................... 100 megohms minimum salt spray .................................................................................................................... ...............................mil-std-202, method 101, condition a ip rating ..................................................................................................................... ........................................................................................ip 40 mechanical characteristics 1 stop strength ................................................................................................................. .............................................. 33 n-cm (3 lb.-in.) maximum mechanical angle .............................................................................................................. ......................................................................... 295 3 torque starting and running ......................................................................................................... ................................. 3.53 n-cm (5 oz.-in.) maximum mounting (torque on bushing).................................................................................................. ................. 1.7-2.0 n-m (15-18 lb.-in.) maximum shaft locking torque with locking bushings ................................................................................... .............................. 14.12 n-cm (20 oz.-in.) weight (single section)........................................................................................................ ....................................................... 25 grams maximum (each additional section) .................................................................................................... ................................................................................. terminals ..................................................................................................................... .............................................. printed circuit pins or j-hooks soldering condition .................................................... recommended hand soldering using sn85/ag5 no clean sol der, 0.025 ? wire diameter maximum temperature 399 c (750 f) for 3 seconds. no wash process to be used with no clean ? ux. part can be wave soldered at 260 c (500 f) for 5 seconds, no wash process with no clean ? ux. marking .................................................................manufacturer?s trademark, wiring diagram, date code, resistanc e, manufacturer?s part number ganging ....................................................................................................................... ..................................................................... 1 cup maximum hardware ........................... one lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number. 1 at room ambient: +25 c nominal and 50 % relative humidity nominal, except as noted. *rohs compliant versions available
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 3862 - 1/2 ?diameter single-turn panel control product dimensions dimensions: mm (inches) dia. 45 dia. 2 plcs. shaft end detail 3862 45 15 c of lug l 32-1/2 10 flat orientation @ ccw end slots are not oriented 3862c/n l optional flat long or from bushing for shafts under 3862e/t std. 2 plcs. l dia. 45 5 x position of slots variable -32 unef - 2a l = dia. for "t" bushing, dia. 6.22 (.245) 6.22 (.245) 2.44 .13 (.096 + .005/ - .000) 6.73 (.265) 2 plcs. 2.31 (.091) 2 plcs. .25 (.010) 2 plcs. 6.22 (.245) 12.07 .76 (.475 .030) 11.51 .41 (.453 .016) 12.7 .41 (.500 .016) 6.25 (1/4) 12.7 (.500) 9.53 (.375) for "e" bushing 15.88 (5/8) .89 .25 (.035 .010) .79 .25 (.031 .010) .79 (.031) .41 (.016) 3.18 .03 (.125 .001) 12.07 .76 (.475 .030) 11.51 .41 (.453 .016) 12.7 .41 (.500 .016) -32 unef - 2a 6.25 (1/4) l = for "c" bushing, 9.65 (.380) 6.35 (.250) for "n" bushing 45 5 x .41 (.016) .79 .25 (.031 .010) .79 (.031) dia. 3.18 .03 (.125 .001) std. 9.53, 22.23 (3/8, 7/8) 2 plcs. .89 .25 (.035 .010) 2.38 (.094) 6.35 (.250) 3.3 (.13) 16.88 (5/8) typ. 2.54 (.100) 5.08 (.200) 3.04 (.120) 5.08 (.200) panel layout pcb layout pc pin terminal 12.06 ?.762 (.475 ?.03) .723 (.0285) 5.08 (0.20) 2.54 (0.10) 3.04 (.12) 5.08 (.20) 2 1 3 j-hook terminal 6.53 (.250) max. 2.286 (.09) typ. 5.08 (0.20) 2.54 (0.10) 4.953 (.195) 8.89 (.35) 2 1 3 ref only .762 (.03) typ. 1 3 ccw potentiometer 2
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. how to order 3862 series panel controls rev. 12/09 3862 c - 28 2 - 102 a l model 3862 12 16 20 28 1/2 ? (12.7 mm) d single-turn cermet bushing c e n t plain 1/4 ? (6.35 mm) d x 1/4 ? (6.35 mm) l locking 1/4 ? (6.35 mm) d x 1/2 ? (12.7 mm) l plain 1/4 ? (6.35 mm) d x 3/8 ? (9.53 mm) l locking 1/4 ? (6.35 mm) d x 3/8 ? (9.53 mm) l terminal style and shaft type 1 2 3 5 6 7 solder lugs, plain end solder lugs, slotted end solder lugs, flatted shaft pc pins, plain end pc pins, slotted end pc pins, flatted end element taper/tolerance a h linear 10 % linear 5 % rohs identifier compliant non-compliant l blank resistance code/value (in ohms) (101) (251) (501) (102) (252) (502) (103) (253) (503) (104) (254) (504) (105) 100 250 500 1k 2.5k 5k 10k 25k 50k 100k 250k 500k 1m 3/8 ? (9.53 mm) l x 1/8 ? (3.18 mm) d 1/2 ? (12.7 mm) l x 1/8 ? (3.18 mm) d 5/8 ? (15.88 mm) l x 1/8 ? (3.18 mm) d 7/8 ? (22.20 mm) l x 1/8 ? (3.18 mm) d consult factory for lengths not shown. boldface features are bourns standard options. all others are available with higher minimum order quantities. shaft type (fms) & diameter c c c, e, n, t c, e, n, t bushings
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