SF44 RECTRON | Alldatasheet
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GLASS PASSIVATED SUPER FAST RECTIFIER VOLTAGE 200 Volts CURRENT 4.0 Amperes RECTRON SEMICONDUCTOR TECHNICAL SPECIFICATION
FEATURES
- High reliability * Low leakage * Low forward voltage * High current capability * Super fast switching speed * High surge capability * Good for switching mode circuit 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%. ELECTRICAL CHARACTERISTICS (At TA = 25 o C unless otherwise noted) SF44 DO-201AD MAXIMUM RATINGS (At T A = 25 o C unless otherwise noted) 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts. Dimensions in inches and (millimeters) 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 2005-8 REV:A RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Volts Maximum DC Blocking Voltage Maximum Average Forward Current at T A = 55 o C 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 SYMBOL V RRM VDC IO IFSM CJ TJ, T STG VRMS Volts Volts Volts Amps4.0 125 -55 to + 175 Amps pF 0 C UNITSSF44 200 140 200 at Rated DC Blocking Voltage CHARACTERISTICS Maximum Reverse Recovery Time (Note 1) VF SYMBOL IR trr UNITS 0.95 5.0 uAmps nSec Maximum DC Reverse Current Maximum Forward Voltage at 4.0A DC Volts @T A = 25 o C @T A =150 o C SF44 .220 (5.6) .197 (5.0) DIA. .052 (1.3) .048 (1.2) DIA. 1.0 (25.4) MIN. .335 (8.5) .375 (9.5) 1.0 (25.4) MIN.
RATING AND CHARACTERISTIC CURVES ( SF44 ) FIG. 6 - TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE, (pF) REVERSE VOLTAGE, ( V ) 200 100 .1 .2 .4 1.0 2 4 10 20 40 100 TJ = 25 FIG. 1 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC NONINDUCTIVE NONINDUCTIVE D.U.T
25 Vdc
(approx) ( - ) ( - ) ( + ) ( + ) NON- INDUCTIVE OSCILLOSCOPE (NOTE 1) PULSE GENERATOR (NOTE 2) NOTES: 1 Rise Time = 7ns max. Input Impedance = 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. trr +0.5A -0.25A -1.0A 1cm SET TIME BASE FOR 10 ns/cm FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE AVERAGE FORWARD CURENT, (A)AMBIENT TEMPERATURE ( ) 7.0 6.0 5.0 3.0 4.0 2.0 0 25 50 75 100 125 150175 1.0 Single Phase Half Wave 60Hz Resistive or Inductive Load FIG. 3 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT, (uA) PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) TJ = 25 TJ = 100 TJ = 150 100 1.0 .01 400 20 60 80 100 120 140 FIG. 5 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENTPEAK FORWARD SURGE CURRENT, (A) NUMBER OF CYCLES AT 60Hz 175 150 125 100 1 2 5 10 20 50 100 8.3ms Single Half Sine-Wave (JEDEC Method) INSTANTANEOUS FORWARD VOLTAGE, (V) FIG. 4 - TYPICAL INSTANTANEOUS INSTANTANEOUS FORWARD CURRENT, (A) .001 .01 1.0 FORWARD CHARACTERISTICS Pulse Width = 300uS 1% Duty Cycle TJ = 25