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  12 anti-burst fusible resistor rfb series Uz (rfb ? ) features features g the anti-burst type wire wound or film ?type fusible resistors can provide reliable and environmentally safe fusing behavior,reliable performance and endurance to surge voltage. g ?@??Uz?ocoh? ????_??~I ???? characteristics item ? remarks ] load life under high temperature ??? jis-c-5202 7.10 rated current at 50% 70 for 1,000 hours humidity resistance ??? jis-c-5202 7.9 mil-st d-202,method 106,heat(65 at 90% 98%). vibration ? jis-c-5202 6.3 mil-std-202,method 213,condition 1. thermal shock ??h jis-c-5202 7.4 mil-std-202,met hod 107, test condition b.(-55 +155 ) insulation resistance ^ jis-c-5202 5.6 mil-std-202,method 302 ( R 10k at 100v) resistance to soldering heat a? jis-c-5202 6.4 mil-std-202,method 210,test condition c.(20s at 260 ). solderability ? jis-c-5202 6.5 mil-std-202,method 208. lead pull force ? jis-c-5202 6.1.2 mil-std-202,method 211, test condition a. salt mist spray }F? mil-std-202,method 101,condition b. fuse characteristics ? operating temperature ? -55 155 safety certification ?JC ul 1412 (file no.e257690) power rating i=constant opening time power rating i=constan t opening time 2 4 w 10 sec min 1 6 w 10 sec min 28w 8 sec 40 sec max 18w 8 sec 35sec max 32w 3 sec 10 sec max 20w 5 sec 20 sec max 36w 2 sec 5 sec max 2w &1w fuse curve (i=constant) 0 10 20 30 40 50 60 24 28 32 36 loading power(watt) fuse time(second) 22w 2 sec 10 sec max 1/2w fuse curve (i=constant) 0 10 20 30 40 50 60 16 18 20 22 loading power(w) times(seconds) dimension ? (mm) model rated power ~ (w) resistance range ? ( ) dielectric withstanding voltage ? l d d rfb 1/2w 1/2 0.1 100 2,000v 7.5 0.5 3.6 0.3 26 3 0.60 0.05 various types of forming & taping are available ?bcb rfb 1w 1 0.1 100 2,000v 9.5 0.5 4.3 0.3 26 3 0.6 / 0.8 0.05 rfb 2w 2 0.1 100 2,000v 13 0.5 5.5 0.3 26 3 0.80 0.05 derating curve ?fp derating curve of wire wound fusible(1/2w) 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 25 50 70 85 100 115 130 ambient temperature() rated power derating curve of wire wound fusible(1w) 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 25 50 70 100 130 145 155 ambient temperature() rated power derating curve of wire wound fusible(s2w) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 25 50 70 100 125 150 200 ambient temperature() rated powe r


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