b520c thru b540c surface mount schottky barrier rectifiers reverse voltage C 20 to 40 volts forward current C 5.0 amperes features ? for surface mounted applications ? metal-semiconductor junction with guard ring ? epitaxial construction ? very low forward voltage drop ? high current capability ? plastic material has ul flammability classificati on 94v-0 ? for use in low voltage, high frequency inverters, free wheeling, and polarity protection application mechanical data ? case: molded plastic ? polarity: color band denotes cathode ? weight:0.007 ounces, 0.21 grams smc maximum ratings and electrical characteristics ratings at 25 c ambient temperature unless otherwise specified. single phase, half wave, 60hz, resistive or inducti ve load. for capacitive load, derate current by 20%. characteristics symbol b520c B530C b540c unit maximum repetitive peak reverse voltage v rrm 20 30 40 v maximum rms voltage v rms 14 21 28 v maximum dc blocking voltage vdc 20 30 40 a maximum average forward rectified current @tl=85c i av 5.0 a peak forward surge 8.3ms single half sine-wave superimposed on rated load i fsm 125 a maximum forward voltage at 5.0a dc v f 0.55 v maximum dc reverse current @tj=25c at rated dc blocking voltage @ tj=100c i r 0.5 20 ma typical junction capacitance (note 1) cj 300 pf typical thermal resistance (note 2, 4) r jl 14 c/w typical thermal resistance (note 3, 4) r ja 50 c/w operating junction temperature range tj -55 to +125 c storage temperature range t stg -55 to +150 c rev.1, nov-2008, kshc10 note: (1) measured at 1.0mhz and applied reverse v oltage of 4.0v dc... (2) thermal resistance junction to lead (3) thermal resistance junction to ambient (4) unit mounted on glass epoxy substrate 1oz/ft2 3 5x35 mm copper pad.
rating and characteristic curves b520c thru b540c fig.1- forward current derating curve 0 1 2 3 4 5 6 0 25 50 75 100 125 lead temperature, ( ) average forward current, (a) fig.2- maximum non-repetitive surge current 0 25 50 75 100 125 150 1 10 100 number of cycles at 60hz peak forward surge current , (a) fig.3- typical junction capacitance 100 1000 0.1 1 10 100 reverse volt age, voltages capacitance, (pf) fig.4- typical forward characteristics 0.01 0.1 1 10 0 0.1 0.2 0.3 0.4 0.5 0.6 instantaneous forward voltage, volts instantaneous forward current , ( a) fig.5- typical reverse characteristics 0.001 0.01 0.1 1 10 100 0 20 40 60 80 100 120 percent of rated peak reverse voltage, (%) instant aneous reverse current, (ma) fig.6- dc reverse voltage derating curve 0 20 40 60 80 100 120 0 25 50 75 100 125 ambient temperature, ( ) percent of dc reverse voltage, (%) note: lsc and its subsidiaries reserve the right to make modifications, enhancements, improvements, co rrections or other changes, to this document, and the product s and services described herein at anytime, without notice. tj=100 tj=25 tj=25 pulse width 300us 2% duty cycle tj=25 , f=1mhz 8.3ms single half sine-wave mounted on glass-epoxy substrate with 1oz/ft 2 _35x35 mm copper pad. mounted on glass-epoxy substrate with 1oz/ft 2 _5x7 mm copper pad. rth j-a in still-air=60 /w
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