dimensions in inches and (millimeters) DO-201AD features high efficiency, low vf high current capability high reliability high surge current capability low power loss mechanical data cases: molded plastic epoxy: ul 94v-0 rate flame retardant polarity: color band denotes cathode high temperature soldering guaranteed: 260 o c/10 seconds/.375?,(9.5mm) lead lengths at 5 lbs., (2.3kg) tension weight: 1.2 grams maximum ratings and electrical characteristics rating at 25 o c ambient temperature unless otherwise specified. single phase, half wave, 60 hz, resistive or inductive load. for capacitive load, derate current by 20% type number symbol by251 by252 by253 by254 by255 units maximum recurrent peak reverse voltage v rrm 200 400 600 800 1300 v maximum rms voltage v rms 140 280 420 560 910 v maximum dc blocking voltage v dc 200 400 600 800 1300 v maximum average forward rectified current . 375 (9.5mm) lead length @t a = 75 o c i (av) 3.0 a peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method ) i fsm 150 a maximum instantaneous forward voltage @ 3.0a v f 1.0 v maximum dc reverse current @ t a =25 o c at rated dc blocking voltage @ t a =125 o c i r 5.0 100 ua ua maximum full load reverse current, full c y cle avera g e .375? ( 9.5mm ) lead len g th @t l =75 ht ir 30 ua typical junction capacitance ( note 1 ) cj 40 pf typical thermal resistance ( note 2 ) r ja 40 o c/w operating temperature range t j -65 to +150 o c storage temperature range t stg -65 to +150 o c notes: 1. measured at 1 mhz and applied reverse voltage of 4.0 v d.c. 2. mount on cu-pad size 16mm x 16mm on p.c.b. by251-by255 3.0 amp. silicon rectifiers http://www.luguang.cn mail:lge@luguang.cn
ratings and characteristic curves (by251 thru by255) fig.4- typical junction capacitance p acn o itc nuj ) f p(.e cna ti c a 100 50 10 1 5 1 100 50 5 10 reverse voltage. (v) tj=25 c 0 fig.1- maximum forward current derating curve average forward current amperes 250 50 75 100 125 150 175 2 3 0 1 4 ambient temperature. ( c) o single phase half wave 60hz resistive or inductive load 0.375" (9.5mm) lead length fig.2- typical reverse characteristics 0 20 40 60 80 100 120 140 0.01 0.1 100 1 percent of rated peak reverse voltage. (%) tj=25 c 0 tj=125 c 0 instantaneous reverse current .( a) forward voltage. (v) fig.5- typical forward characteristics instantaneous forward current. (a) 1.81.6 0.60.4 0.8 1.0 1.2 1.4 0.01 100 30 3 10 1 0.03 0.1 tj=25 c pulse width=300 s 1% duty cycle o fig.3- maximum non-repetitive forward surge current per leg peak forward surge current. (a) 0 2 5 10 20 100 50 150 120 60 0 number of cycles at 60hz 8.3ms single half sine wave per leg. (jedec method) tj=tj max. 90 30 by251-by255 3.0 amp. silicon rectifiers http://www.luguang.cn mail:lge@luguang.cn
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