USF81 RECTRON SEMICONDUCTOR THRU TECHNICAL SPECIFICATION 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 TO-220A * High surge capability * Good for switching mode circuit ( ) .187 4.7 MECHANICAL DATA .148 (3.8) .153 (3.9) .413 (10.5) * Case: TO-220 Molded plastic .108 .146 (3.7) ( ) .374 9.5 (2.75) * Epoxy: Device has UL flammability classification 94V-O .053 (1.3) ( ) .047 1.2 * Lead: MIL-STD-202E method 208C guaranteed ( ) .270 6.9 * Mounting position: Any .230 (5.8) * Weight: 2.24 grams .610 (15.5) .583 (14.8) .04MAX. (1.0) .157 (4.0) .583 (14.8) .051 ( ) .531 13.5 ( ) 1.3 MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS .035 (0.9) o Ratings at 25 C ambient temperature unless otherwise specified028 (0.7) ( ) .022 0.56 Single phase, half wave, 60 Hz, resistive or inductive load. ( ) .102 2.6 ( ) .014 0.36 For capacitive load, derate current by 20%. ( ) .091 2.3 .126 ( ) 3.2 Dimensions in inches and (millimeters) o MAXIMUM RATINGS (At TA = 25 C unless otherwise noted) RATINGS SYMBOL USF81 USF82 USF83 USF84 UNITS Maximum Recurrent Peak Reverse Voltage VRRM Volts 50 100 150 200 Maximum RMS Volts VRMS 35 70 105 140 Volts Maximum DC Blocking Voltage VDC Volts 50 100 150 200 Maximum Average Forward Current IO 8.0 Amps o at TC = 100 C Peak Forward Surge Current IFM (surge):8.3 ms single half IFSM 150 Amps sine-wave superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) CJ 45 pF 0 Operating and Storage Temperature Range TJ, TSTG -55 to + 150 C o ELECTRICAL CHARACTERISTICS (At TA = 25 C unless otherwise noted) CHARACTERISTICS SYMBOL UNITS USF81 USF82 USF83 USF84 Maximum Forward Voltage at 8.0A DC VF 0.95 Volts o Maximum DC Reverse Current TA = 25 C 10 IR uAmps o at Rated DC Blocking Voltage TA =100 C 500 Maximum Reverse Recovery Time (Note 1) trr 20 nSec 2002-7 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. ( ) RATING AND CHARACTERISTIC CURVES USF81 THRU USF84 FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE 50 10 trr NONINDUCTIVE NONINDUCTIVE +0.5A 14 12 Single Phase ( - ) Half Wave 60Hz D.U.T 10 Resistive or 0 ( + ) PULSE Inductive Load 25 Vdc GENERATOR -0.25A 8 (approx) (NOTE 2) ( - ) 6 1 OSCILLOSCOPE ( + ) NON- (NOTE 1) 4 INDUCTIVE 2 -1.0A 1cm 1 Rise Time = 7ns max. Input Impedance = 0 25 50 75 100 125 150175 NOTES: SET TIME BASE FOR 1 megohm. 22pF. 10 ns/cm AMBIENT TEMPERATURE ( ) 2. Rise Time = 10ns max. Source Impedance = 50 ohms. FIG. 4 - TYPICAL INSTANTANEOUS FIG. 3 - TYPICAL REVERSE CHARACTERISTICS FORWARD CHARACTERISTICS 100 100 T = 150 J 10 10 T = 100 J T = 25 J 1.0 1 Pulse Width = 300uS 1% Duty Cycle T = 25 J .1 .1 .01 .01 0 20 40 60 80 100 120 140 0 .2 .4 .6 .8 1.0 1.2 1.4 INSTANTANEOUS FORWARD VOLTAGE, (V) PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT FIG. 6 - TYPICAL JUNCTION CAPACITANCE 175 200 150 100 8.3ms Single Half Sine-Wave ( ) JEDEC Method 60 125 40 100 20 10 75 T = 25 J 6 50 4 25 2 0 1 .1 .2 .4 1.0 2 4 10 20 40 100 1 2 5 10 20 50 100 NUMBER OF CYCLES AT 60Hz REVERSE VOLTAGE, ( V ) RECTRON PEAK FORWARD SURGE CURRENT, (A) INSTANTANEOUS REVERSE CURRENT, (uA) JUNCTION CAPACITANCE, (pF) INSTANTANEOUS FORWARD CURRENT, (A) AVERAGE FORWARD CURENT, (A)