50v-600v super fast rectifiers 3.0a e-mail: sales@taychipst.com web site: www.taychipst.com 1 of 2 sf31 thru sf38 fea tures mechanical da t a * low forward voltage drop * high current capability * high reliability * high surge current capability * case: molded plastic * epoxy: ul 94v-0 rate flame retardant * lead: axial leads, solderable per mil-std-202, method 208 guranteed * polarity: color band denotes cathode end * mounting position: any * weight: 1.10 grams * good for switching mode application vol t age range 50 to 600 volts current 3.0 amperes maximum ratings and electrical chara cteristics rating 25 c ambient temperature uniess otherwies specified. single phase half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. type number maximum recurrent peak reverse voltage maximum rms voltage maximum dc blocking voltage maximum average forward rectified current .375"(9.5mm) lead length at t a=55 c peak forward surge current, 8.3 ms single half sine-wave superimposed on rated load (jedec method) maximum instantaneous forward voltage at 3.0a maximum dc reverse current t a=25 c at rated dc blocking voltage t a=100 c maximum reverse recovery time (note 1) typical junction capacitance (note 2) 3.0 125 5.0 50 50 -65 +150 a a v m a m a ns pf notes: 1. reverse recovery time test condition: if=0.5a, ir=1.0a, irr=0.25a 2. measured at 1mhz and applied reverse voltage of 4.0v d.c. 35 sf31 sf32 sf33 sf34 sf35 sf36 SF37 sf38 units 50 100 150 200 300 400 500 600 v 0.95 1.25 1.70 operating and storage t emperature range t j , t stg c 35 70 105 140 210 280 350 420 v 50 100 150 200 300 400 500 600 v 50
super fast rectifiers e-mail: sales@taychipst.com web site: www.taychipst.com 50v-600v 3.0a 2 of 2 sf31 thru sf38 0.1 1.0 .01 10 50 rating and characteristic curves (sf31 thru sf38) fig.4-typical reverse fig.1- test circuit diagram and reverse recovery time characteristic characteristics fig.2-typical forward current a v e r a g e f o r w a r d c u r r e n t , ( a ) r e v e r s e l e a k a g e c u r r e n t , ( m a ) 0.5 1.0 1.5 2.0 2.5 3.0 (+) (+) 25vdc (approx.) ( ) ( ) 10 noninductive 50 noninductive w w pulse generator (note 2) oscilliscope (note 1) 1 non- inductive w notes: 1. rise time= 7ns max., input impedance= 1 megohm.22pf. 2. rise time= 10ns max., source impedance= 50 ohms. +0.5a 0 -0.25a -1.0a | | | | | | | | 1cm set time base for 50 / 10ns / cm trr d.u.t. 3.0 single phase half wave 60hz resistive or inductive load 0.375"(9.5mm) lead length derating curve tj=100 c tj=25 c 0 0 25 50 75 100 125 150 175 ambient temperature,( c) 0 percent of rated peak reverse volt age,(%) 20 40 60 80 100 120 140 0.1 1.0 .01 10 50 fig.3-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 ) forward volt age,(v) pulse width 300us 1% duty cycle .4 .6 .8 1.0 1.2 1.4 1.6 1.8 3.0 s f 3 5 ~ s f 3 6 s f 3 7 s f 3 1 ~ s f 3 4 tj=25 c fig.6-typical junction capacit ance reverse voltage,(v) j u n c t i o n c a p a c i t a n c e , ( p f ) 175 150 125 100 75 50 25 0 .01 .05 .1 .5 1 5 10 50 100 25 0 50 75 100 125 number of cycles at 60hz 1 10 5 50 100 tj=25 c 8.3ms single half sine wave jedec method p e a k f o r w a r d s u r g e c u r r e n t , ( a ) fig.5-maximum non-repetitive forward surge current
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