??? maximum repetitive peak reverse voltage ? maximum rms voltage ??? maximum dc blocking voltage ? maximum average forward rectified current ?? 8.3ms??? peak forward surge current 8.3 ms single half sine-wave typical thermal resistance o?? operating junction and storage temperature range -55--- +150 v v v a a /w v rrm v rms v dc i f(av) i fsm tj, tstg ?? ta = 25 maximum ratings & thermal characteristics ratings at 25 ambient temperature unless otherwise specified. symbols unit ? ? 50 ---1000 v 2.5 a her 251 her 252 her 253 her 254 her 255 her 256 her 257 50 100 200 400 600 800 50 100 200 400 600 800 35 70 140 280 420 560 20 100 2.5 1.3 5.0 200 HER251 ...... her258 her 258 1000 1000 700 her 251 her 252 her 253 her 254 her 255 her 256 her 257 her 258 50 75 1.7 1.0 300 300 210 siyu r plastic high-efficiency rectifiers reverse voltage 50 to 1000v forward current 2.5a ta= 25 ta=100 ?? i f =0.5a i r =1.0a i rr =0.25a ? v r = 4.0v, f = 1mhz v a ns i r trr maximum reverse current type junction capacitance ta = 25 electrical characteristics ratings at 25 ambient temperature unless otherwise specified. symbols unit max. reverse recovery time v f i f = 2.5a pf 50 30 ? maximum forward voltage c j r ja dachang electronics features ? low reverse leakage ?? high forward surge capability o?? high temperature soldering guaranteed: 260 /10 , 0.375" (9.5mm) ?? 260 /10 seconds, 0.375" (9.5mm) lead length, ?? 5 (2.3kg) 5 lbs. (2.3kg) tension mechanical data : terminals: plated axial leads : ?? polarity: color band denotes cathode end ? : mounting position: any ???rohs? lead and body according with rohs standard do-15l unit mm 25.4 25.4 7.50.2 4.00.2 0.80.1 min min www.datasheet.co.kr datasheet pdf - http://www..net/
HER251 ...... her258 siyu r i f (a) ?? ? v f (v) ? ta( c ) ? ?? i fsm (a) ? i f(av) (a) ??? characteristic curves typical forward characteristic forward current derating curve i f instantaneous forward current (a) v f instantaneous forward voltage (v) tamb, ambient temperature (c) i f(a) average forward rectified current (a) maximum non repetitive peak forward surge current number of cycles at 60 hz. i fsm peak forward surge current (a) 0.8 1.0 1.2 1.4 1.6 1.8 0.01 0.1 0.2 1 2 10 tj = 25 c HER251 thru her253 her256 thru her258 her254, her255 10mm 10mm 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 150 175 10mm 10mm 1 2 4 6 10 20 40 100 80 60 40 20 0 100 dachang electronics www.datasheet.co.kr datasheet pdf - http://www..net/
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