features low cost diffused junction low forward voltage drop low reverse leakage current high current capability the plastic material carries ul recognition 94v-0 mechanical data case: jedec r-3 molded plastic polarity: color band denotes cathode weight: 0.021 ounces , 0.58 grams mounting position: any dimensions in inches and (millimeters) maximum ratings and electrical characteristics rating at 25 ambient temperature unless otherwise specified. single phase, half wave ,60hz, resistive or inductive load. for capacitive load, derate current by 20% characteristics symbol RL251G rl252g rl253g rl254g rl255g rl256g rl257g unit maximum recurrent peak reverse voltage v rrm 50 100 200 400 600 800 1000 v maximum rms voltage v rms 35 70 140 280 420 560 700 v maximum dc blocking voltage v dc 50 100 200 400 600 800 1000 v maximum average forward rectified current @t a =70 peak forward surge current 8.3ms single half sine-wave super imposed on rated load(jedec method) maximum peak forward voltage at 2.5a dc v f v maximum dc reverse current @t j =25 at rated dc blocking voltage @t j =100 typical junction capacitance (note1) c j pf typical thermal resistance (note2) r ja /w operating temperature range t j storage temperature range t stg glass passivated rectifiers reverse voltage - 50 to 1000 volts forward current - 2.5 amperes RL251G thru rl257g ~ 29 ~ i fsm 150 i r 50 30 2.thermal resistance junction of ambient. -55 to +150 -55 to +150 notes:1.measured at 1.0 mhz and applied reverse voltage of 4.0v dc i (av) 2.5 a 1.0 5.0 25 a ua .157(4.0) .142(3.6) .042(1.07) .038(0.97) .171(4.35) .156(3.95) 1.0(25.4) min 1.0(25.4) min r-3
rating and charactertic curves RL251G thru rl257g ~ 30 ~ number of cycles at 60hz fig. 2 C maximum non-repetitive surge current p e a k f o r w a r d s u r g e c u r r e n t ( a m p e r e s ) 1 150 100 50 0 200 2 4 10 20 40 100 pulse width 8.3 ms single half-sine-wave (jedec method) fig.3 C typical junction capacitance c a p a c i t a n c e ( p f ) reverse voltage,volts 100 10 1 60 40 20 2 4 4 .2 .4 20 40 2 1.0 100 .1 t j = 25 c f = 1 mhz fig.4-typical forward characteristics i n s t a n t a n e o u s f o r w a r d c u r r e n t , ( a ) instantaneous forward voltage,volts 0 0.1 1.0 0.01 10 0.2 0.4 0.6 0.8 1.2 1.6 1.4 1.0 1.8 t j = 25 c pulse width 300us fig. 1 C forward current derating curve lead temperature a v e r a g e f o r w a r d c u r r e n t ( a m p e r e s ) 1.0 0.5 0 25 3.0 1.5 2.0 2.5 50 125 100 75 150 175 single phase half wave 60hz resistive or inductive load
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