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| RECTRON SEMICONDUCTOR TECHNICAL SPECIFICATION USF81 THRU USF84 GLASS PASSIVATED SUPER FAST RECTIFIER VOLTAGE RANGE 50 to 200 Volts CURRENT 8.0 Amperes FEATURES * * * * * * * High reliability Low leakage Low forward voltage High current capability Super fast switching speed High surge capability Good for switching mode circuit .413 (10.5) .374 (9.5) .153 (3.9) .146 (3.7) .270 (6.9) .230 (5.8) .610 (15.5) .583 (14.8) .04MAX. (1.0) .157 (4.0) .187 (4.7) .148 (3.8) .053 (1.3) .047 (1.2) TO-220A MECHANICAL DATA * * * * * Case: TO-220 Molded plastic Epoxy: Device has UL flammability classification 94V-O Lead: MIL-STD-202E method 208C guaranteed Mounting position: Any Weight: 2.24 grams .108 (2.75) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 o C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. .051 (1.3) .035 (0.9) .028 (0.7) .102 (2.6) .091 (2.3) .583 (14.8) .531 (13.5) .022 (0.56) .014 (0.36) .126 (3.2) Dimensions in inches and (millimeters) MAXIMUM RATINGS (At TA = 25 oC unless otherwise noted) RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Volts Maximum DC Blocking Voltage Maximum Average Forward Current at TC = 100 o C Peak Forward Surge Current IFM (surge):8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) Operating and Storage Temperature Range SYMBOL VRRM VRMS VDC IO IFSM CJ TJ, TSTG USF81 50 35 50 USF82 100 70 100 8.0 150 45 -55 to + 150 USF83 150 105 150 USF84 200 140 200 UNITS Volts Volts Volts Amps Amps pF 0 C ELECTRICAL CHARACTERISTICS (At TA = 25oC unless otherwise noted) CHARACTERISTICS Maximum Forward Voltage at 8.0A DC Maximum DC Reverse Current at Rated DC Blocking Voltage Maximum Reverse Recovery Time (Note 1) NOTES : 1. Test Conditions: IF=0.5A, IR=-1.0A, IRR=-0.25A. 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts. @TA = 25 o C @TA =100 o C SYMBOL VF IR trr USF81 USF82 0.95 10 500 20 nSec 2002-7 USF83 USF84 UNITS Volts uAmps RATING AND CHARACTERISTIC CURVES ( USF81 THRU USF84 ) FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 NONINDUCTIVE 10 NONINDUCTIVE trr +0.5A (-) PULSE GENERATOR AVERAGE FORWARD CURENT, (A) FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE 14 12 10 8 6 4 2 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE ( ) Single Phase Half Wave 60Hz Resistive or Inductive Load (+) 25 Vdc (approx) (-) D.U.T 0 -0.25A (NOTE 2) 1 NONINDUCTIVE OSCILLOSCOPE (NOTE 1) (+) -1.0A NOTES:1 Rise Time = 7ns max. Input Impedance = 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. 1cm SET TIME BASE FOR 10 ns/cm FIG. 3 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, (uA) INSTANTANEOUS FORWARD CURRENT, (A) FIG. 4 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 100 100 TJ = 150 10 TJ = 100 10 1.0 1 TJ = 25 .1 TJ = 25 Pulse Width = 300uS 1% Duty Cycle .1 .01 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT, (A) .01 0 .2 .4 .6 .8 1.0 1.2 1.4 INSTANTANEOUS FORWARD VOLTAGE, (V) FIG. 6 - TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE, (pF) 175 150 125 100 75 50 25 0 1 2 5 10 20 50 NUMBER OF CYCLES AT 60Hz 100 8.3ms Single Half Sine-Wave (JEDEC Method) 200 100 60 40 20 10 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 TJ = 25 REVERSE VOLTAGE, ( V ) RECTRON |
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