1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 36 rw series high power smd wirewound resistors 5 and 7 watt featu res ? finned design facilitates cooling ? high power density ? wide resistance range ? tight tolerance ? low tcr perfor mance d ata rw5s0 rw7s0 power at 25c at 70c 7 watts 5 watts 10 watts 7 watts resistance range 0.1 ~ 50k 0.1 ~ 100k non-inductive range 0.1 ~ 12.5k 0.1 ~ 20k tolerance 0.5%, 1%, 5% temperature coefficient 0.1 ~ 0.99: 90ppm 1 ~ 10: 50ppm 10+: 20ppm operating temp. range -55c ~ +155c max. working voltage (pxr) 1/2 weight 5.67g 11.34g characteristics temp. cycle (-55c to 125c, 1000 cycles) 0.5%+.05 load life (1000 hours at 25c) 1.0%+.05 immersion (260c for 10 sec.) 0.1%+.05 leaching (260c solder immersion, 60 sec.) no visible leaching thermal shock (units at -55c, then rated power applied) no mechanical damage flammability ul material rating ul94v0 derating 100 percent rated powe r ambient te mperature, oc 60 20 0 80 40 25 50 100 150 75 70 0 125 ohmite has used its thermal management expertise to produce a unique resistor design. the resistor body incorporates fins identical to a heatsink. these fins, as with a heatsink, increase the surface area of the part and allow for greater power dissipation. this unique design allows a small footprint for the smd device and a high power dissipation. these 5 and 7 watt resistors are extremely stable with a load life drift of only 1%. a special flat has been designed in to the part for pick and place operations. (continued)
1-866-9-ohmite ? intl 1-847-258-0300 ? fax 1-847-574-7522 ? www.ohmite.com ? info@ohmite.com 37 dimensions 0.020 in. / 0.51 mm order ing infor mation standard part numbers for rw series resistance tolerance part number 0.10 1% RW5S0FAR100FE 1.0 1% rw5s0fa1r00fe 10 5% rw5s0fa10r0je 20 5% rw5s0fa20r0je 47 5% rw5s0fa47r0je 100 5% rw5s0fa100rje 470 5% rw5s0fa470rje 1000 5% rw5s0fa1k00je 4700 5% rw5s0fa4k70je 10,000 5% rw5s0fa10k0je 1.0 1% rw7s0fb1r00fe 10 1% rw7s0fb10r0fe 100 1% rw7s0fb100rfe 1000 1% rw7s0fb1k00fe 10,000 1% rw7s0fb10k0fe 100,000 1% rw7s0fb100kfe rw series high power smd wirewound resistors 5 and 7 watt overall dimensions length width height rw5s0 0.806 / 20.47 0.365 / 9.27 0.406 / 10.31 rw7s0 1.128 / 28.65 0.471 / 11.96 0.51 / 12.95 land pattern l m n o 5s0 (fa) 0.600 / 15.24 1.000 / 25.40 0.200 / 5.08 0.450 / 11.43 7s0 (fb) 0.890 / 22.61 1.330 / 29.59 0.220 / 5.59 0.520 / 13.21 tape and reel fa (5s0) fb (7s0 ) reel hub diameter 77mm 77mm reel outer diameter 560mm 560mm reel width 46mm 46mm tape width 44mm 44mm pitch 20mm 24mm component type r = resistor component modifier w = wirewound wattage 70c 25c 5s0 = 5w 7w 7s0 = 7w 10w type of base s = standard package fa = 5w fb = 7w package modifier a, b sequential resistance value r = decimal k = 1,000 m = 1,000,000 tolerance d = 0.50% f=1% j=5% examples: r249 = 0.249 ohms 24r9 = 24.9 ohms 2k49 = 2,490 ohms t = tape and reel (optional) 5w=300/reel 7w=200/reel e = rohs compliant rw5s0fa1k00fet power rating and temperature rise data based on the recommended land patterns using 10 oz. copper pcb. fr-4 material. 0.062" thick. 4 layer. l o m n
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