1N4942 THRU 1N4948 FAST SWITCHING PLASTIC RECTIFIER VOLTAGE - 200 to 1000 Volts CURRENT - 1.0 Ampere FEATURES l High surge current capability l Plastic package has Underwriters Laboratory DO-41 Flammability Classification 94V-O Utilizing Flame Retardant Epoxy Molding Compound l l Void-free Plastic in a DO-41 package 1.0 ampere operation at TA=55 ¢J with no thermal runaway l Fast switching for high efficiency l Exceeds environmental standards of MIL-S-19500/228 MECHANICAL DATA Case: Molded plastic, DO-41 Terminals: Axial leads, solderable per MIL-STD-202, Method 208 Polarity: Band denotes cathode Mounting Position: Any Weight: 0.012 ounce, 0.3 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 ¢J ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current .375"(9.5mm) lead length at TA=55 ¢J Peak Forward Surge Current 8.3ms single half sine wave superimposed on rated load(JECEC method) Maximum Forward Voltage at 1.0A Maximum Reverse Current TJ=25 ¢J at Rated DC Blocking Voltage TJ=100 ¢J Typical Junction capacitance (Note 1) Maximum Reverse Recovery Time(Note 2) Typical Thermal Resistance (Note 3) R £KJA Operating and Storage Temperature Range 1N4942 200 140 200 150 1N4944 400 280 400 150 1N4946 600 420 600 1.0 1N4947 800 560 800 1N4948 1000 700 1000 30 A 1.3 5.0 500 V £g A £g A PF ns ¢J /W ¢J 12 250 41 -55 to +150 250 250 NOTES: 1. Measured at 1 MHz and applied reverse voltage of 4.0 VDC 2. Reverse Recovery Test Conditions: IF=.5A, IR=1A, Irr=.25A 3. Thermal resistance from junction to ambient and from junction to lead at 0.375"(9.5mm) lead length P.C.B. mounted UNITS V V V A RATING AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948 trr +0.5A 0 -0.25 -1.0 NOTE:1.Rise Time = 7ns max. Input Impedance = 1 megohm. 22pF 2.Rise Time = 10ns max. 1cm SET TIME BASE FOR 50 ns/cm Source Impedance = 50 Ohms Fig. 1-REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 1 TJ = 25¢J 0.1 PULSE WIDTH = 300£gs 1% DUTY CYCLE 0.01 0.2 0.4 0.6 0.8 1.0 1.2 1.4 AVERAGE FORWARD RECTIFIED CURRENT AMPERES INSTANTANEOUS FORWARD CURRENT, AMPERES 10 1.6 1.4 MAXIMUM AVERAGE CURRENT RATING SINGLE PHASE, HALF WAVE 60Hz 1.2 RESISTIVE OR INDUCTIVE LOAD .375"(9.5mm) LEAD LENGTHS 1.0 .8 .6 .4 .2 0 0 20 40 60 80 120 140 160 AMBIENT TEMPERATURE, ¢J INSTANTANEOUS FORWARD VOLTAGE, VOLTS Fig. 2-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS Fig. 3-FORWARD CURRENT DERATING CURVE 30 TJ = 25 ¢J 10 1 1 4 FORWARD SURGE CURRENT, AMPERES pk (HALF-SINE WAVE) CAPACITANCE, pF 100 24 18 12 6 1 2 4 6 8 10 20 40 60 80 100 10 REVERSE VOLTAGE, Vdc Fig. 4-TYPICAL JUNCTION CAPACITANCE NUMBER OF CYCLES AT 60Hz Fig. 5-PEAK FORWARD SURGE CURRENT 180