RECTRON SF44 SEMICONDUCTOR TECHNICAL SPECIFICATION GLASS PASSIVATED SUPER FAST RECTIFIER VOLTAGE 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) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 o C ambient temperature unless otherwise specified. DIA. 1.0 (25.4) MIN. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive load, derate current by 20%. Dimensions in inches and (millimeters) MAXIMUM RATINGS (At TA = 25oC unless otherwise noted) SYMBOL SF44 UNITS Maximum Recurrent Peak Reverse Voltage VRRM 200 Volts Maximum RMS Volts VRMS 140 Volts VDC 200 Volts IO 4.0 Amps I FSM 125 Amps RATINGS Maximum DC Blocking Voltage Maximum Average Forward Current at T A = 55 oC Peak Forward Surge Current I FM (surge):8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) Operating and Storage Temperature Range CJ 50 T J , T STG -55 to + 175 pF 0 C ELECTRICAL CHARACTERISTICS (At TA = 25oC unless otherwise noted) CHARACTERISTICS Maximum Forward Voltage at 4.0A DC SYMBOL VF Maximum DC Reverse Current @T A = 25 o C at Rated DC Blocking Voltage @T A =150 o C 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. IR SF44 0.95 UNITS Volts 5.0 uAmps 50 trr 20 nSec 2005-8 REV:A RATING AND CHARACTERISTIC CURVES ( SF44 ) FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE 10 NONINDUCTIVE AVERAGE FORWARD CURENT, (A) FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 NONINDUCTIVE trr +0.5A (-) D.U.T (+) 25 Vdc (approx) (-) 0 PULSE GENERATOR (NOTE 2) 1 NONINDUCTIVE OSCILLOSCOPE (NOTE 1) -0.25A (+) -1.0A 1cm NOTES:1 Rise Time = 7ns max. Input Impedance = SET TIME BASE FOR 10 ns/cm 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. INSTANTANEOUS FORWARD CURRENT, (A) INSTANTANEOUS REVERSE CURRENT, (uA) TJ = 150 10 TJ = 100 1.0 TJ = 25 .1 Single Phase Half Wave 60Hz Resistive or Inductive Load 5.0 4.0 3.0 2.0 1.0 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE ( 10 1.0 TJ = 25 .1 Pulse Width = 300uS 1% Duty Cycle .01 .001 .01 0 20 40 60 80 100 120 0 140 JUNCTION CAPACITANCE, (pF) 150 8.3ms Single Half Sine-Wave (JEDEC Method) 125 100 75 50 25 0 1 2 5 10 20 50 NUMBER OF CYCLES AT 60Hz 100 .4 .6 .8 1.0 1.2 1.4 FIG. 6 - TYPICAL JUNCTION CAPACITANCE FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 175 .2 INSTANTANEOUS FORWARD VOLTAGE, (V) PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) PEAK FORWARD SURGE CURRENT, (A) 6.0 FIG. 4 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG. 3 - TYPICAL REVERSE CHARACTERISTICS 100 7.0 200 100 60 40 20 10 TJ = 25 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 REVERSE VOLTAGE, ( V ) RECTRON )