USF44

RECTRON SEMICONDUCTOR TECHNICAL SPECIFICATION USF41 THRU USF44 GLASS PASSIVATED ULTRAFAST RECTIFIER VOLTAGE RANGE 50 to 200 Volts CURRENT 4.0 Amperes FEATURES * * * * * * * High reliability Low leakage Low forward voltage High current capability Super fast switching speed High surge capability Good for switching mode circuit DO-201AD MECHANICAL DATA * * * * * Case: Molded plastic Epoxy: Device has UL flammability classification 94V-O Lead: MIL-STD-202E method 208C guaranteed Mounting position: Any Weight: 1.18 grams 1.0 (25.4) MIN. .052 (1.3) DIA. .048 (1.2) .375 (9.5) .335 (8.5) .220 (5.6) .197 (5.0) DIA. 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%. 1.0 (25.4) MIN. Dimensions in inches and (millimeters) MAXIMUM RATINGS (At T A = 25 oC unless otherwise noted) RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Volts Maximum DC Blocking Voltage Maximum Average Forward Current at T A = 5 5 oC 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 I FSM CJ T J , T STG USF41 50 35 50 USF42 100 70 100 4.0 125 20 -55 to + 150 USF43 150 105 150 USF44 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 4.0A 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. @T A = 2 5 o C @T A = 100 o C SYMBOL VF IR trr USF41 USF42 0.90 10 500 20 nSec 2002-12 USF43 USF44 UNITS Volts uAmps RATING AND CHARACTERISTIC CURVES ( USF41 THRU USF44 ) 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 6.0 5.0 4.0 3.0 2.0 1.0 0 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