SR2020CT-SR2060CT Dual Schottky Rectifiers REVERSE VOLTAGE: 20 - 60 V FORWARD CURRENT: 20 A TO-220AB 2.8± 0.1 Features Metal-Semiconductor junction with guard ring 4.5± 0.2 10.2± 0.2 1.4± 0.2 Epitaxial construction Low forward voltage drop,low switching losses 1 8.9± 0.2 For use in low voltage,high frequency inverters free wheeling,and polarity protection applications 19.0± 0.5 xxxx φ 3.8± 0.15 PIN 2 3 3.5± 0.3 13.8± 0.5 2.6± 0.2 High surge capability The plastic material carries U/L recognition 94V-0 0.9± 0.1 Mechanical Data 0.5± 0.1 2.5± 0.1 PIN 1 Case:JEDEC TO--220AB,molded plastic PIN 3 Positive CT CASE PIN 2 Polarity: As marked Weight: 0.08ounce, 2.24 grams Dimensions in millimeters 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 V 1.0 IR mA 50.0 TJ -55 --- +150 TSTG -55 --- +150 Note: 1. Pulse test:300us pulse width,1% duty cy cle. http://www.luguang.cn mail:[email protected] SR2020CT-SR2060CT Dual Schottky Rectifiers Ratings AND Charactieristic Curves 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 80 100 200 180 160 140 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 /W FIG.5 -- TYPICAL JUNCTION CAPACITANCE 40 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 FIG.6 -- TYPICAL TRANSIENT THERMAL IMPEDANCE TJ=25 1000 SR2020CT-SR2040CT SR2050CT-SR2060CT 100 0.1 1 10 REVERSE VOLTAGE, VOLTS http://www.luguang.cn 100 TRANSIENT THERMAL IMPEDANCE, JUNCTION CAPACITANCE, pF 100 4000 10 1 0.1 0.01 0.1 1 10 PULSE DURATION, Sec mail:[email protected] 100