glass passivated super fast rectifier voltage range 50 to 200 volts current 1.0 ampere rectron semiconductor technical specification features * high reliability * low leakage * low forward voltage * high current capability * super fast switching speed * high surge capability * good for switching mode circuit 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%. electrical characteristics (at t a = 25 o c unless otherwise noted) usf11 thru usf14 do-41 maximum ra tings (at t a = 25 o c unless otherwise noted) notes : 1. t est conditions: i f =0.5a, i r =-1.0a, i rr =-0.25a. 2. measured at 1 mh z and applied reverse voltage of 4.0 volts. dimensions in inches and (millimeters) mechanical data * case: molded plastic * epoxy: device has ul flammability classification 94v-o * lead: mil-std-202e method 208c guaranteed * mounting position: any * weight: 0.33 gram 2002-4 ratings maximum recurrent peak reverse voltage maximum rms volts maximum dc blocking voltage maximum average forward current at t a = 55 o c peak forward surge current i fm (surge):8.3 ms single half sine-wave superimposed on rated load (jedec method) typical junction capacitance (note 2) 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 1.0 30 7 -55 to + 150 amps pf 0 c units usf11 usf14 usf12 USF13 50 200 100 150 35 140 70 105 50 200 100 150 at rated dc blocking voltage characteristics maximum reverse recovery time (note 1) v f symbol i r trr units 0.92 5.0 uamps nsec maximum dc reverse current maximum forward voltage at 1.0a dc volts @t a = 25 o c @t a =100 o c usf11 usf14 usf12 USF13 100 20 1.0 (25.4) min. .166 (4.2) .205 (5.2) 1.0 (25.4) min. .107 (2.7) .080 (2.0) dia. .034 (0.9) .028 (0.7) dia.
rectron rating and characteristic curves ( usf11 thru usf14 ) fig. 6 - typical junction capacitance junction capacitance, (pf) 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 fig. 1 - test circuit diagram and reverse recovery time characteristic 50 noninductive 10 noninductive d.u.t 25 vdc (approx) ( - ) (-) ( + ) ( + ) 1 non- inductive oscilloscope (note 1) pulse generator (note 2) notes: 1 rise time = 7ns max. input impedance = 1 megohm. 22pf. 2. rise time = 10ns max. source impedance = 50 ohms. trr +0.5a 0 -0.25a -1.0a 1cm set time base for 10 ns/cm fig. 2 - typical forward current derating curve average forward curent, (a) ambient temperature ( ) 2.0 1.0 0 25 50 75 100 125 150 175 0 single phase half wave 60hz resistive or inductive load fig. 3 - typical reverse characteristics instantaneous reverse current, (ua) percent of rated peak reverse voltage, (%) t j = 25 t j = 100 t j = 150 100 10 1.0 .1 .01 40 0 20 60 80 100 120 140 fig. 5 - maximum non-repetitive forward surge current peak forward surge current, (a) number of cycles at 60hz 35 30 25 20 15 10 5 0 1 2 5 10 20 50 100 8.3ms single half sine-wave (jedec method) fig. 4 - typical instantaneous forward instantaneous forward current, (a) instantaneous forward voltage, (v) 0 .2 .4 .6 .8 1.0 1.2 1.4 .01 .1 1 10 100 pulse width = 300us 1% duty cycle t j = 25 characteristics
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