USF34

BL FEATURES GALAXY ELECTRICAL USF31 --- USF34 VOLTAGE RANGE: 50 --- 200 V CURRENT: 3.0 A SUPER FAST RECTIFIER Low cost Low leakage Low forward voltage drop High current capability Easily cleaned with alcohol,Isopropanol and similar solvents The plastic material carries U/L recognition 94V-0 DO - 27 .052(1.3) .048(1.2) .217(5.5) .193(4.9) MECHANICAL DATA Case:JEDEC DO--27,molded plastic Terminals: Axial lead ,solderable per MIL- STD-202,Method 208 Polarity: Color band denotes cathode Weight: 0.041 ounces,1.15 grams Mounting position: Any 1.0(25.4)MIN .374(9.5) .350(8.9) 1.0(25.4)MIN MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 ambient temperature unless otherwise specified. Single phase,half wave,60Hz,resistive or inductive load. For capacitive load,derate by 20%. USF31 Maximum recurrent peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forw ard rectified current 9.5mm lead length, @TA=75 USF32 100 70 100 3.0 USF33 150 105 150 USF34 200 140 200 UNITS V V V A VRRM VRMS VDC IF(AV) 50 35 50 Peak forw ard surge current 8.3ms single half-sine-w ave superimposed on rated load @TJ =125 IFSM 125.0 A Maximum instantaneous forw ard voltage @ 3.0A Maximum reverse current at rated DC blocking voltage @TA=25 @TA=100 VF IR trr CJ RθJA TJ TSTG 0.92 10.0 500.0 20 20 20 - 55 ----- + 150 - 55 ----- + 150 V A ns pF /W Maximum reverse recovery time (Note1) Typical junction capacitance Typical thermal resistance (Note2) (Note3) Operating junction temperature range Storage temperature range NOTE: 1. Measured with I F=0.5A, I R=1A, I rr=0.25A. www.galaxycn.com 2. Measured at 1.0MHz and applied rev erse v oltage of 4.0V DC. 3. Thermal resistance f rom junction to ambient. Document Number 0264030 BLGALAXY ELECTRICAL 1. RATINGS AND CHARACTERISTIC CURVES trr 50 N 1. 10 N 1. USF31 --- USF34 FIG.1 -- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC +0.5A 0 PULSE GENERATOR (NOTE2) 1 NONINDUCTIVE OSCILLOSCOPE (NOTE 1) D.U.T. (+) 25VDC (approx) (-) -0 .2 5A -1 .0 A 1cm NOTES:1.RISE TIME = 7ns MAX.INPUT IMPEDANCE = 1M .22pF. JJJJJ2.RISE TIME =10ns MAX.SOURCE IMPEDANCE=50 . SET TIME BASE FOR 10/20 ns/cm FIG.2 -- TYPICAL FORWARD CHARACTERISTIC INSTANTANEOUS FORWARD CURRENT, AMPERES 100 40 20 10 4 2 FIG.3 -- FORWARD DERATING CURVE AVERAGE FORWARD CURRENT AMPERES z TJ=25 P u ls e W id th = 3 0 0 µ s 5 4 3 2 1 0 0 Single Phase Half Wave 60HZ Resistive or Inductive Load 0.375"(9.5mm)Lead Length 1 0 .4 0 .2 0 .1 0 .0 4 0 .0 2 0 .0 1 0 0 .2 0 .4 0 .6 0 .8 1 .0 1 .2 1 .4 25 50 75 100 125 150 175 INSTANTANEOUS FORWARD VOLTAGE, VOLTS FIG.4 -- TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE,pF AMBIENT TEMPERATURE, FIG.5 -- PEAK FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT, AMPERES 100 60 40 20 10 6 4 2 1 0.1 0.2 TJ=25 f=1.0MHZ 150 8.3ms Single Half Sine-Wave 125 100 75 50 25 0 0.4 1 2 4 10 20 40 100 1 5 10 50 100 REVERSE VOLTAGE,VOLTS FIG.6 -- TYPICAL REVERSE CHARACTERISTICS CURRENT, MICROAMPERES NUMBER OF CYCLES AT 60Hz INSTANTANEOUS REVERSE 100 T J= 1 5 0 10 1 T J= 1 0 0 .1 T J= 2 5 .0 1 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, www.galaxycn.com Document Number 0264030 BLGALAXY ELECTRICAL 2.