lk12-lfr thru LK14-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 1a surface mount schottky barrier rectifiers lk12-lfr thru LK14-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 sma, dimensions in inches and (millimeters) z terminals: solder plated z polarity: indicated by cathode band z weight: 0.05 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 lk12-lfr LK14-LFR units maximum recurrent peak reverse voltage v rrm 20 40 v maximum rms voltage v rms 14 28 v maximum dc blocking voltage v dc 20 40 v maximum average forward rectified current see fig.1 i o 1.0 a maximum overload surge 8.3ms single half sine-wave i fsm 30 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 lk12-lfr LK14-LFR units maximum forward voltage at 1.0a ac and 25 v f 0.38 0.40 v maximum reverse current at 25 i r 0.5 ma .165(4.2) .150(3.8) .185(4.8) .177(4.4) .04(1.0) typ .110(2.8) .094(2.4) cathode .067(1.7) .060(1.5) .012(0.3) typ .220(5.58) ref .052(1.32) min .08(2.03) min soldering pad .094(2.38) max
lk12-lfr thru LK14-LFR page: 2 ratings and characteristic curve lk12-lfr thru LK14-LFR t j =25 pulse width=300us 1% duty cycle fig.2 - typical instantaneous forward characteristics 20 10 1.0 0.1 instantaneous forward current amperes .1 .3 .5 .7 .9 1.1 1.3 1.5 1.7 1.9 2.1 instantaneous forward voltage, volts fig. 4 - typical junction capacitance 400 200 100 80 60 40 20 10 junction capacitance, p f 0.1 0.4 1.0 4 10 40 100 reverse voltage, volts fig. 5 - maximum non-repetitive surge current 50 40 30 20 10 0 peak forward surge current, amperes 1 2 4 10 20 40 100 number of cycles at 60h z 8.3ms single half sine-wave (jedec method) fig. 1 - forward current derating curve 1.5 1.0 0.5 0 i o -average rectified current (a) 0 20 40 60 80 100 120 140 160 180 200 lead temperature ( ) p.c.b mounted on 0.30.3?(8.08.0mm) copper pad areas single phase half wave 60h z resistive or inductive load fig. 3 - 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 a =25 t a =125 t a =75
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