1N4942 RECTRON SEMICONDUCTOR THRU 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 .034 (0.9) DIA. * Lead: MIL-STD-202E method 208C guaranteed .028 (0.7) 1.0 (25.4) * Mounting position: Any MIN. * Weight: 0.33 gram .205 (5.2) .166 (4.2) .107 (2.7) DIA080 (2.0) 1.0 (25.4) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS MIN. o Ratings at 25 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) o MAXIMUM RATINGS (At TA = 25 C unless otherwise noted) RATINGS SYMBOL 1N4942 1N4944 1N4946 1N4947 1N4948 UNITS Maximum Recurrent Peak Reverse Voltage VRRM 200 400 600 800 1000 Volts Maximum RMS Voltage VRMS 140 280 420 560 700 Volts Maximum DC Blocking Voltage VDC 200 400 600 800 1000 Volts Maximum Average Forward Rectified Current IO 1.0 Amps o at TA = 75 C Peak Forward Surge Current 8.3 ms single half sine-wave IFSM 30 Amps superimposed on rated load (JEDEC method) Typical Junction Capacitance (Note 2) CJ 15 pF 0 Operating and Storage Temperature Range TJ, TSTG -55 to + 150 C o ELECTRICAL CHARACTERISTICS (At TA = 25 C unless otherwise noted) CHARACTERISTICS SYMBOL 1N4942 1N4944 1N4946 1N4947 1N4948 UNITS Maximum Instantaneous Forward Voltage at 1.0A DC VF 1.3 Volts Maximum DC Reverse Current 5.0 uAmps o at Rated DC Blocking Voltage TA = 25 C IR Maximum Full Load Reverse Current Full Cycle 100 uAmps o Average, .375 (9.5mm) lead length at TL = 55 C Maximum Reverse Recovery Time (Note 1) trr 150 250 500 nSec NOTES : 1. Test Conditions: IF = 0.5A, IR = -1.0A, IRR = -0.25A 2002-11 2. Measured at 1 MHZ and applied reverse voltage of 4.0 volts ( ) RATING AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948 FIG. 1 - TYPICAL FORWARD CURRENT FIG. 2 - TYPICAL INSTANTANEOUS DERATING CURVE FORWARD CHARACTERISTICS 1.0 10 .8 TJ = 25 1.0 .6 Pulse Width=300uS .4 1% Duty Cycle .1 Single Phase Half Wave 60Hz .2 Resistive or Inductive Load .01 0 0 25 50 75 100 125 150 175 .4 .6 .8 1.0 1.2 1.4 1.6 AMBIENT TEMPERATURE, ( ) INSTANTANEOUS FORWARD VOLTAGE, (V) FIG. 2 - MAXIMUM NON-REPETITIVE FORWARD FIG. 4 - TYPICAL REVERSE CHARACTERISTICS SURGE CURRENT 50 20 8.3ms Single Half Sine-Wave 10 (JEDED Method) 40 T = 125 J 1.0 30 T = 75 J 20 .1 10 1 T = 25 J 0 .01 0 2 4 6 8 10 20 40 6080100 0 20 40 60 80 100 120 140 NUMBER OF CYCLES AT 60Hz PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) FIG. 3 - TYPICAL JUNCTION CAPACITANCE 200 FIG. 6 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 100 50 10 60 trr NONINDUCTIVE NONINDUCTIVE +0.5A 40 ( - ) 20 D.U.T 0 ( + ) PULSE 25 Vdc GENERATOR -0.25A 10 (approx) (NOTE 2) T = 25 J ( - ) 6 1 OSCILLOSCOPE ( + ) NON- (NOTE 1) 4 INDUCTIVE -1.0A 2 1cm SET TIME BASE FOR NOTES: 1 Rise Time = 7ns max. Input Impedance = 50/100 ns/cm 1 megohm. 22pF. 1 2. Rise Time = 10ns max. Source Impedance = .1 .2 .4 1.0 2 4 10 20 40 100 50 ohms. REVERSE VOLTAGE, ( V ) RECTRON JUNCTION CAPACITANCE, (pF) FORWARD SURGE CURRENT, (A) AVERAGE FORWARD CURRENT, (A) INSTANTANEOUS REVERSE CURRENT, (uA) INSTANTANEOUS FORWARD CURRENT, (A)