1N4942 RECTRON THRU SEMICONDUCTOR TECHNICAL SPECIFICATION 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 1.0 (25.4) MIN. .205 (5.2) .166 (4.2) .034 (0.9) DIA. .028 (0.7) .107 (2.7) .080 (2.0) DIA. 1.0 (25.4) MIN. 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%. Dimensions in inches and (millimeters) MAXIMUM RATINGS (At T A = 25 oC unless otherwise noted) SYMBOL 1N4942 1N4944 1N4946 1N4947 1N4948 Maximum Recurrent Peak Reverse Voltage RATINGS VRRM 200 400 600 800 1000 Volts Maximum RMS Voltage VRMS 140 280 420 560 700 Volts VDC 200 400 600 800 1000 Volts Maximum DC Blocking Voltage Maximum Average Forward Rectified Current at T A = 75 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 IO UNITS 1.0 Amps I FSM 30 Amps CJ 15 pF T J , T STG -55 to + 150 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 = 25 oC Maximum Full Load Reverse Current Full Cycle Average, .375” (9.5mm) lead length at T L = 55 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 1N4947 1N4948 5.0 UNITS Volts uAmps IR 100 trr 150 uAmps 250 500 nSec 2002-11 INSTANTANEOUS FORWARD CURRENT, (A) FIG. 1 - TYPICAL FORWARD CURRENT DERATING CURVE 1.0 .8 .6 .4 Single Phase Half Wave 60Hz Resistive or Inductive Load .2 0 0 25 50 75 100 125 150 175 AMBIENT TEMPERATURE, ( ) INSTANTANEOUS REVERSE CURRENT, (uA) AVERAGE FORWARD CURRENT, (A) RATING AND CHARACTERISTIC CURVES ( 1N4942 THRU 1N4948 ) FORWARD SURGE CURRENT, (A) FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 50 8.3ms Single Half Sine-Wave (JEDED Method) 40 30 20 10 1 0 0 2 4 6 8 10 20 40 60 80 100 NUMBER OF CYCLES AT 60Hz FIG. 2 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 10 TJ = 25 1.0 Pulse Width=300uS 1% Duty Cycle .1 .01 .4 .6 .8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE, (V) FIG. 4 - TYPICAL REVERSE CHARACTERISTICS 20 10 TJ = 125 1.0 TJ = 75 .1 TJ = 25 .01 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) JUNCTION CAPACITANCE, (pF) FIG. 3 - TYPICAL JUNCTION CAPACITANCE 200 FIG. 6 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 100 60 40 50 NONINDUCTIVE 20 10 TJ = 25 6 4 trr +0.5A (-) D.U.T 0 PULSE GENERATOR -0.25A (NOTE 2) 1 NONINDUCTIVE OSCILLOSCOPE (NOTE 1) (+) -1.0A 2 1 .1 (+) 25 Vdc (approx) (-) 10 NONINDUCTIVE .2 .4 1.0 2 4 10 20 40 100 REVERSE VOLTAGE, ( V ) 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 50/100 ns/cm RECTRON