1N4944

RECTRON SEMICONDUCTOR TECHNICAL SPECIFICATION 1N4942 THRU 1N4948 FAST RECOVERY RECTIFIER VOLTAGE RANGE 200 to 1000 Volts CURRENT 1.0 Ampere FEATURES * * * * * High switching capability Low leakage Low forward voltage drop High current capability High surge current capability DO-41 MECHANICAL DATA * * * * * Case: Molded plastic Epoxy: Device has UL flammability classification 94V-O Lead: MIL-STD-202E method 208C guaranteed Mounting position: Any Weight: 0.33 gram .034 (0.9) DIA. .028 (0.7) 1.0 (25.4) MIN. .205 (5.2) .166 (4.2) .107 (2.7) .080 (2.0) 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 Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current at T A = 7 5 oC Peak Forward Surge Current 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 1N4942 200 140 200 1N4944 400 280 400 1N4946 600 420 600 1.0 30 15 -55 to + 150 1N4947 800 560 800 1N4948 1000 700 1000 UNITS Volts Volts Volts Amps Amps pF 0 C ELECTRICAL CHARACTERISTICS (At TA = 25oC unless otherwise noted) CHARACTERISTICS Maximum Instantaneous Forward Voltage at 1.0A DC Maximum DC Reverse Current at Rated DC Blocking Voltage TA = 2 5 oC Maximum Full Load Reverse Current Full Cycle Average, .375” (9.5mm) lead length at T L = 5 5 oC Maximum Reverse Recovery Time (Note 1) NOTES : 1. Test Conditions: IF = 0.5A, IR = -1.0A, I RR = -0.25A 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts SYMBOL VF 1N4942 1N4944 1N4946 1.3 5.0 IR 100 trr 150 250 500 uAmps nSec 2002-11 1N4947 1N4948 UNITS Volts uAmps RATING AND CHARACTERISTIC CURVES ( 1N4942 THRU 1N4948 ) INSTANTANEOUS FORWARD CURRENT, (A) AVERAGE FORWARD CURRENT, (A) FIG. 1 - TYPICAL FORWARD CURRENT DERATING CURVE 1.0 .8 .6 .4 .2 0 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE, ( ) Single Phase Half Wave 60Hz Resistive or Inductive Load FIG. 2 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 10 1.0 TJ = 25 .1 Pulse Width=300uS 1% Duty Cycle .01 .4 .6 .8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE, (V) FIG. 4 - TYPICAL REVERSE CHARACTERISTICS FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD FORWARD SURGE CURRENT, (A) SURGE CURRENT 50 8.3ms Single Half Sine-Wave (JEDED Method) INSTANTANEOUS REVERSE CURRENT, (uA) 20 10 TJ = 125 40 30 1.0 TJ = 75 20 .1 TJ = 25 10 1 0 0 2 4 6 8 10 20 40 60 80 100 NUMBER OF CYCLES AT 60Hz .01 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) FIG. 3 - TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE, (pF) 200 100 60 40 20 10 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 REVERSE VOLTAGE, ( V ) TJ = 25 (+) 25 Vdc (approx) (-) FIG. 6 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 50 NONINDUCTIVE 10 NONINDUCTIVE trr +0.5A (-) 0 PULSE GENERATOR D.U.T -0.25A (NOTE 2) 1 NONINDUCTIVE OSCILLOSCOPE (NOTE 1) (+) -1.0A 1 NOTES: Rise Time = 7ns max. Input Impedance = 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance = 50 ohms. 1cm SET TIME BASE FOR 50/100 ns/cm RECTRON