features low thermal resistant ceramic core e24 resistance values rohs compliant* wide power range (1~10 w) coating material meets ul 94v-0 requirements applications smart meters renewable energy industrial power supplies/chargers lighting instruments/gauges white goods w series wirewound power resistor *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. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. *rohs compliant electrical characteristics resistance range ................................................ see popular resistance values table tolerance ....................................................................................................................5 % operating temperature .........................................................................-55 c to +200 c temperature coef? cient .............................................................................. 300 ppm/c maximum voltage .................................................................................................... p*r non-inductive version is available upon request. physical characteristics resistor .................................................................... low thermal resistant ceramic core lead wire ......................................................................................tin-plated copper wire coating material ............................................................... meets ul 94v-0 requirements environmental characteristics test conditions speci cation short time overload 2.5 times rated voltage r/r?(2 % 0.05 ) for 5 seconds. solderability 245 3 c for 2.5 0.5 seconds. over 95 % coverage resistance to 260 5 c for 10 1 seconds. r/r?(1 % + 0.05 ) solder heat dielectric strength test voltage >500 vrms for pass >1 minute. insulation resistance test voltage >500 vrms for >10 9 1 minute. 40 2 c, 90 to 95 %. load life humidity 1.5 hours on, 0.5 hours off for r/r (5 % + 0.05 ) 1000 hours at rated power. 70 2 c. load life 1.5 hours on, 0.5 hours off for r/r?(5 % + 0.05 ) 1000 hours at rated power. packaging speci cations model style qty. per box (pcs.) min. order quantity (pcs.) w1m ammo pack 1,000 5,000 w2m w3m w5m ammo pack 500 2,000 w7m w9m bulk in box 25 / 200 2,000 w10m popular resistance values code r value 15r0 15 22r0 22 33r0 33 39r0 39 47r0 47 code r value 56r0 56 82r0 82 1000 100 1200 120 1500 150 other e24 resistance values available upon request. how to order w 3 m 22r0 j product series w = wirewound power rating 1 = 1 watt 2 = 2 watts 3 = 3 watts 5 = 5 watts 7 = 7 watts 9 = 9 watts 10 = 10 watts pin style m = axial miniaturized version resistance code ? r<100 ohms: r represents decimal point (examples: 56r0 = 56 ohms) ? r 100 ohms: first three digits are signi? cant, fourth digit represents number of zeros to follow (example: 1500 = 150 ohms) resistance tolerance j = 5 %
speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. w series wirewound power resistor typical part marking dimensions: mm (inches) product dimensions wl d t (dia.) w model dimensions l* d w t w1m 9.5 1.0 (.374 .004) 4.0 1.0 (.157 .004) 28.0 3.0 (1.102 .118) 0.60 0.05 (.024 .002) w2m 11.5 1.0 (.453 .004) 4.5 1.0 (.177 .004) 28.0 3.0 (1.102 .118) 0.65 0.05 (.026 .002) w3m 15.5 1.0 (.610 .004) 5.5 1.0 (.217 .004) 28.0 3.0 (1.102 .118) 0.70 0.05 (.028 .002) w5m 17.5 1.0 (.689 .004) 6.5 1.0 (.256 .004) 28.0 3.0 (1.102 .118) 0.75 0.05 (.030 .002) w7m 24.5 1.0 (.965 .004) 8.5 1.0 (.335 .004) 38.0 3.0 (1.496 .118) 0.75 0.05 (.030 .002) w9m 39.5 1.0 (1.555 .004) 8.5 1.0 (.335 .004) 38.0 3.0 (1.496 .118) 0.75 0.05 (.030 .002) w10m 52.5 1.0 (2.067 .004) 8.5 1.0 (.335 .004) 38.0 3.0 (1.496 .118) 0.75 0.05 (.030 .002) 1st significant figure 2nd significant figure multiplier tolerance power derating curve 0 -55 0 50 70 100 150 200 250 275 300 20 40 percent rated load (%) ambient temperature (c) 60 80 120 100 resistors shall be marked with color coding. colors shall be in accordance with jis c 0802. * larger body size available upon request. color 1st band 2nd band multi- plier tol. black 001 brown 1 1 10 1 % red 2 2 100 2 % orange 331k yellow 4 4 10k green 5 5 100k 0.5 % blue 661m 0.25 % violet 7 7 10m 0.10 % grey 8 8 0.05 % white 99 gold 0.1 5 % silver 0.01 10 %
3312 - 2 mm smd trimming potentiometer speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device perfor mance may vary over time. users should verify actual device performance in their speci c applications. w series wirewound power resistor 07/15 packaging speci cations model o p a b c qty./box w1m 58 ?1 (2.283 ?.039) 5 ?0.3 (.197 ?.012) 75 ?5 (2.953 ?.197) 70 ?5 (2.756 ?.197) 255 ?5 (10.039 ?.197) 1,000 pcs. w2m 58 ?1 (2.283 ?.039) 10 ?0.5 (.394 ?.020) 80 ?5 (3.150 ?.197) 82 ?5 (3.228 ?.197) 255 ?5 (10.039 ?.197) 1,000 pcs. w3m 65 ?5 (2.559 ?.197) 10 ?0.5 (.394 ?.020) 90 ?5 (3.543 ?.197) 119 ?5 (4.685 ?.197) 255 ?5 (10.039 ?.197) 1,000 pcs. w5m 65 ?5 (2.559 ?.197) 10 ?0.5 (.394 ?.020) 90 ?5 (3.543 ?.197) 88 ?5 (3.465 ?.197) 255 ?5 (10.039 ?.197) 500 pcs. w7m 90 ?5 (3.543 ?.197) 10 ?0.5 (.394 ?.020) 115 ?5 (4.528 ?.197) 124 ?5 (4.882 ?.197) 500 ?5 (19.685 ?.197) 500 pcs. dimensions: mm (inches) o l1 l2 z = 1.0 t 61 s t p a c b asia-paci c: tel: +886-2 2562-4117 ?fax: +886-2 2562-4116 emea: tel: +36 88 520 390 ?fax: +36 88 520 211 the americas: tel: +1-951 781-5500 ?fax: +1-951 781-5700 www.bourns.com for w9m and w10m packaging speci cations, please contact factory.
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