features 3/8 ?square/ multiturn / cermet / industrial / sealed five popular terminal styles standoffs rohs compliant* version available for trimmer applications/processing guidelines, click here 3299 - 3/8 ?square trimpot trimming potentiometer *rohs directive 2002/95/ec jan 27 2003 including annex. ?rimpot?is a registered trademark of bourns, inc. ??luorinert?is a registered trademark of 3m co. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. electrical characteristics standard resistance range ................................10 to 2 megohms (see standard resistance table) resistance tolerance ........... ?0 % std. (tighter tolerance available) absolute minimum resistance ........................... 1 % or 2 ohms max. (whichever is greater) contact resistance variation ........................ 1.0 % or 3 ohms max. (whichever is greater) adjustability voltage .................................. ?.01 % resistance ............................ ?.05 % resolution ................................... in nite insulation resistance ............... 500 vdc. 1,000 megohms min. dielectric strength sea level................................ 900 vac 70,000 feet ............................ 350 vac effective travel .................25 turns nom. environmental characteristics power rating (300 volts max.) 70 ? ...................................... 0.5 watt 125 ? ....................................... 0 watt temperature range ... -55 ? to +125 ? temperature coef cient ... ?00 ppm/? seal test ......................85 ? fluorinert? humidity .......mil-std-202 method 103 96 hours (2 % tr, 10 megohms ir) vibration ....... 20 g (1 % tr; 1 % vr) shock ......... 100 g (1 % tr; 1 % vr) load life ............. 1,000 hours 0.5 watt @ 70 ? (3 % tr; 3 % or 3 ohms, whichever is greater, crv) rotational life .......................200 cycles (4 % tr; 3 % or 3 ohms, whichever is greater, crv) physical characteristics torque ............................. 3.0 oz-in. max. mechanical stops ................. wiper idles terminals .......................solderable pins weight ..................................... 0.035 oz. marking ........................... manufacturer s trademark, resistance code, wiring diagram, date code, manufacturer s model number and style wiper ............... 50 % (actual tr) ?0 % flammability ..........................u.l. 94v-0 standard packaging .....50 pcs. per tube adjustment tool ..............................h-90 product dimensions 1 3 cw clockwise ccw 2 wiper standard resistance table resistance resistance (ohms) code 10 100 20 200 50 500 100 101 200 201 500 501 1,000 102 2,000 202 5,000 502 10,000 103 20,000 203 25,000 253 50,000 503 100,000 104 200,000 204 250,000 254 500,000 504 1,000,000 105 2,000,000 205 rev. 08/10 tolerances: 0.25 except where noted (.010) dimensions: mm (inches) how to order 3299 w - 1 - 103 lf model style standard or modi ed product indicator -1 = standard product resistance code terminations lf = 100 % tin-plated (rohs compliant) blank = 90 % tin / 10 % lead-plated (standard) consult factory for other available options. popular distribution resistance values listed in boldface. special resistances available. 1.52 (.060) 3 2 1 bottom view bottom view bottom view bottom view bottom view 3299p common dimensions 1.09 (.043) 6.10 +.30/-.25 (.240 +.012/-.010 ) 3299w 1.91 (.075) 2 3 1 3299x 2 3 1 3299y 2 3 1 3299z 2 3 1 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 2.54 (.100) 1.91 (.075) 1.91 (.075) 1.91 (.075) 2.54 (.100) min. 2.54 (.100) 2.54 (.100) 2.54 (.100) .51 (.020) dia. typ. 5.23 (.206) 10.03 (.395) .38 (.015) 9.53 (.375) 1.12 (.044) 6.22 1.14 (.245 .045) adj. slot 2.29 (.090) .56 (.022) .64 (.025) wide x x deep dia. *rohs compliant versions available
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