BL GALAXY ELECTRICAL SR2020CT - - - SR2060CT REVERSE VOLTAGE: 20 - 60 V FORWARD CURRENT: 20 A DUAL SCHOTTKY RECTIFIERS FEATURES Metal-Semiconductor junction with guard ring TO-220AB Epitaxial construction For use in low voltage,high frequency inverters free xxxx wheeling,and polarity protection applications Low forward voltage drop,low switching losses High surge capability The plastic material carries U/L recognition 94V-0 MECHANICAL DATA Case:JEDEC TO--220AB,molded plastic Terminals: Leads ,solderable per MIL- STD-111 j kkn kkkk202, Method 208 Polarity: As marked ｍｍ Weight: 0.08ounce, 2.24 grams Mounting position: Any MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 ambient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. SR 2020CT SR 2030CT SR 2040CT SR 2050CT SR 2060CT UNITS Maximum recurrent peak reverse voltage VRRM 20 30 40 50 60 V Working peak reverse voltage VRMS 14 21 28 35 42 V Maximum DC blocking voltage VDC 20 30 40 50 60 V Maximum average forw ard rectified current v 9.5mm lead length, @ TA=100 IF(AV) 20.0 A Peak forw ard surge current 8.3 ms single half v sine-w ave superimposed on rated load v (JEDEC Method) @TJ=125 IFSM 150.0 A Maximum instantaneous forw ard voltage per leg @ 10A(Note1) VF Maximum reverse current @TA=25 at rated DC blocking voltage @TA=100 Operating junction temperature range Storage temperature range 0.65 0.75 1.0 mA IR 50.0 TJ -55 --- +150 TSTG -55 --- +150 Note: 1. Pulse test:300us pulse width,1% duty cy cle. Document Number 0267004 V www.galaxycn.com BLGALAXY ELECTRICAL 1. RATINGS AND CHARACTERISTIC CURVES SR2020CT - - - SR2060CT FIG.2 -- TYPICAL REVERSE CHARACTERISTICS PER LEG INSTANTANEOUS REVERSE CURRENT MILLIAMPERES 30 25 AMPERES AVERAGE FORWARD CURRENT FIG.1 --FORWARD CURRENT DERATING CURVE 20 Resistive or inductive load 15 10 5 0 0 50 100 150 CASE TEMPERATURE, TJ=125℃ 1 .1 TJ=75℃ .01 TJ=25℃ .001 0 1 .1 SR2020CT-SR2040CT SR2050CT-SR2060CT .01 0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 1.1 1.2 60 40 80 100 FIG.4 -- PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT AMPERES Pulse width = 300 µs 1% Duty Cycle TJ =125 TJ =25 AMPERES INSTANTANEOUS FORWARD CURRENT 10 20 PERCENT OF RATED PEAK REVERSE VOLTAGE, % FIG.3 -- TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS PER LEG 50 SR2020CT-SR2040CT SR2050CT-SR2060CT 10 200 180 160 140 TJ=TJMAX. 8.3ms Single Half Sine-Wave (JEDEC Method) 120 100 80 60 40 1 INSTANTANEOUS FORWARD VOLTAGE, VOLTS 5 10 50 100 NUMBER OF CYCLE AT 60Hz FIG.5 -- TYPICAL JUNCTION CAPACITANCE /W FIG.6 -- TYPICAL TRANSIENT THERMAL IMPEDANCE TJ=25 1000 SR2020CT-SR2040CT SR2050CT-SR2060CT 100 0.1 1 10 100 REVERSE VOLTAGE, VOLTS TRANSIENT THERMAL IMPEDANCE, JUNCTION CAPACITANCE, pF 100 4000 10 1 0.1 0.01 0.1 1 10 100 PULSE DURATION, Sec www.galaxycn.com Document Number 0267004 BLGALAXY ELECTRICAL 2.