silicon rectifier voltage range 50 to 1000 volts current 2.5 amperes rectron semiconductor technical specification features * low cost * low leakage * low forward voltage drop * high current capability mechanical data * case: molded plastic * epoxy: device has ul flammability classification 94v-o * lead: mil-std-202e method 208c guaranteed * mounting position: any * weight: 0.54 gram maximum ratings and electrical characteristics ratings 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%. rl251 thru rl257 r-3 maximum ra tings (at t a = 25 o c unless otherwise noted) notes : measured at 1 mh z and applied reverse voltage of 4.0 volts electrical characteristics (at t a = 25 o c unless otherwise noted) dimensions in inches and (millimeters) 2002-11 ratings maximum recurrent peak reverse voltage maximum rms voltage maximum dc blocking voltage maximum average forward rectified current at t a = 75 o c peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method) typical junction capacitance (note) operating and storage temperature range symbol v rrm v dc i o i fsm c j t j , t stg v rms volts volts volts amps 2.5 150 35 -55 to + 150 amps pf 0 c units typical thermal resistance r q ja 35 0 c/w 50 100 200 400 600 800 1000 70 35 140 280 420 700 560 50 200 400 600 800 1000 100 rl251 rl252 rl253 rl254 rl255 rl256 rl257 at rated dc blocking voltage characteristics maximum full load reverse current average, full cycle .375 (9.5mm) lead length at t l = 75 o c v f symbol i r units 1.0 5.0 30 uamps uamps maximum dc reverse current maximum instantaneous forward voltage at 2.5a dc volts @t a = 25 o c @t a = 100 o c rl251 rl252 rl253 rl254 rl255 rl256 rl257 50 1.0 ( 25.4 ) min. .138 ( 3.5 ) .160 ( 4.1 ) 1.0 ( 25.4 ) min. .160 ( 4.1 ) .138 ( 3.5 ) dia. .042 ( 1.1 ) .040 ( 1.0 ) dia.
rectron rating and characteristic curves ( rl251 thru rl257 ) fig. 1 - typical forward current average forward current, (a) ambient temperature, ( ) derating curve 2.5 2.0 1.5 1.0 .5 0 0 25 50 75 100 125 150 175 single phase half wave 60hz inductive or resistive load fig. 3 - maximum non-repetitive forward peak forward surge number of cycles at 60hz surge current 1 2 4 6 810 20 40 6080100 150 120 90 60 30 5 8.3ms single half sine-wave (jeded method) current, (a) fig. 2 - typical instantaneous forward characteristics instantaneous forward instantaneous forward voltage, (v) t j = 25 pulse width=300us 1% duty cycle current, (a) .6 .8 1.0 1.2 1.4 1.5 20 10 4 2 1.0 .4 .2 .1 .04 .02 .01 junction capacitance, ( pf ) fig. 5 - typical junction capacitance reverse voltage, ( v ) 200 100 60 40 20 10 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 t j = 25 t j = 100 t j = 25 fig. 4 - typical reverse characteristics instantaneous reverse current, (ua) percent of rated peak reverse voltage, (%) 0 20 40 60 80 100 120 140 .01 .04 .1 .4 10 1.0 4
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