sk32-lfr thru SK310-LFR page: 1 frontier electronics corp. 667 e. cochran street, simi valley, ca 93065 tel: (805) 522-9998 fax: (805) 522-9989 e-mail: frontiersales@frontierusa.com web: http://www.frontierusa.com 3a surface mount schottky barrier rectifiers sk32-lfr thru SK310-LFR features z for surface mounted applications z low profile package z built-in strain relief z easy pick and place z plastic material used carries underwriters laboratory classification 94 v-0 z extremely low vf z majority carrier conduction z high temperature soldering: 250 c /10 seconds at terminals z rohs mechanical data z case: thin smc, dimensions in inches and (millimeters) z terminals: solder plated z polarity: indicated by cathode band z weight: 0.195 grams maximum ratings and electrical characteristics ratings at 25 c ambient temperature unless otherwise specified single phase, half wave, 60 hz, resistive or inducti ve load. for capacitive load, derate current by 20% ratings symbol sk32-lf r sk33-lf r sk34-lf r sk35-lf r sk36-lf r sk38-lf r sk310-lf r units maximum recurrent peak reverse voltage v rrm 20 30 40 50 60 80 100 v maximum rms voltage v rms 14 21 28 35 42 56 70 v maximum dc blocking voltage v dc 20 30 40 50 60 80 100 v maximum average forward rectified current see fig.1 i o 3.0 a maximum overload surge 8.3ms single half sine-wave i fsm 80 a storage temperature range t stg -55 to + 150 operating temperature range t op -55 to + 125 electrical characteristics (a t t a =25 c unless otherwise noted) characteristics symbol sk32-lf r sk33-lf r sk34-lf r sk35-lf r sk36-lf r sk38-lf r sk310-lf r units maximum forward voltage at 3.0a ac and 25 v f 0.55 0.70 0.85 v maximum reverse current at 25 i r 0.5 ma .244(6.2) .228(5.8) .276(7.0) .260(6.6) .04(1.0) typ .189(4.8) .173(4.4) cathode .087(2.2) .071(1.8) .012(0.3) typ .320(8.12) ref .06(1.52) min .158(4.02) min soldering pad .185(4.69) max
sk32-lfr thru SK310-LFR page: 2 ratings and characteristic curve sk32-lfr thru SK310-LFR fig. 3a - typical reverse characteristics 100 10 1.0 .10 .01 .001 instantaneous reverse current, milliamperes 0 20 40 60 80 100 120 140 percent of rated peak reverse voltage, (%) t j =125 t j =75 t j =25 s k 32-lf~s k 34-lf 100 10 1.0 .10 .01 .001 instantaneous reverse current, milliamperes 0 20 40 60 80 100 120 140 percent of rated peak reverse voltage, (%) t j =150 t j = 75 pulse width=300us 1% duty cycle sk32-lf~sk34-lf sk35-lf~sk310-lf fig. 1 - forward current derating curve 3.0 2.25 1.5 0.75 0 average forward current amperes 0 25 50 75 100 125 150 175 single phase half wave 60h z resistive or inductive load lead temperature, p.c.b mounted on 0.30.3?(8.08.0mm) copper pad areas
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