LESHAN RADIO COMPANY, LTD. 1N4942 - 1N4948 FAST GPP DIODES TYPE Maximum Peak Reverse Voltage Maximum Average Maximum Rectified Current Forward Peak @ Half-Wave Surge Current @ Resistive Load 60Hz 8.3ms Superimposed PRV I O@ T L V PK 1N4942 1N4944 1N4946 1N4947 1N4948 200 400 600 800 1000 A AV 1.0 I FM (Surge) C 75 Maximum Reverse Current @ PRV @ TA=25C I 25 R Adc A PK 5.0 Maximum Forward Voltage @ TA=25C Maximum Reverse Recovery Time I FM V FM Trr A PK V PK ns 1.0 1.3 150 150 250 250 500 Package Dimensions DO - 41 Trr I F = 0.5A, I R = 1.0A, I RR = 0.25A Trr Test Conditions: I F = 0.5A, I R = 1.0A, I RR = 0.25A 1.0(25.4) MIN .034(0.9) .028(0.7) .205(5.2) .166(4.2) 1.0(25.4) MIN DIA .107(2.7) DIA .080(2.0) DO - 41 37A-1/2 LESHAN RADIO COMPANY, LTD. 1N4942-1N4948 GPP RATING & CHARACTERISTIC CURVES OF FAST GPP DIODE FIG.1-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC 10 NONINDUCTIVE +0.5A 1 NON. INDUCTIVE Trr (-) D.U.T. (+) 25Vdc (APPROX) (-) AVERAGE FORWARD CURRENT,(A) 50 NONINDUCTIVE FIG. 2 - TYPICAL FORWARD CURRENT DERATING CURVE PULSE G E N E R AT O R (NOTE 2) OSCILLOSCOPE (NOTE 1) 0 -0.25A (+) NOTES:1.Rise Time=7ns max. Input Impedance=1megohm.22pF. 2.Rise Time=10ns max. Source Impedance=50 ohms. -1.0A 1.25 Single Phase Half Wave 60Hz Resistive or Inductive Load 1.00 0.75 0.50 0.25 0 25 SET TIME BASE FOR 50/100ns/cm 1cm 50 75 100 125 150 175 AMBIENT TEMPER ATURE, (C) FIG. 4 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS FIG. 3 - TYPICAL REVERSE CHARACTERISTICS INSTANTANEOUS REVERSE CURRENT (A) INSTANTANEOUS FORWARD CURRENT, (A) 100 20 10 TJ =150C 1.0 TJ =50C .1 TJ =25C TJ =25C 10 1.0 Pulse Width=300s 1% Duty Cycle 0 .01 0 20 40 60 80 100 120 .4 140 .6 PERCENT OF RATED PEAK REVERSE VOLTAGE, (%) .8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE,(V) FIG. 5 - MAXINUM NON-REPETITIVE FOWARD SURGE CURRENT FIG. 6 - TYPICAL JUNCTION CAPACITANCE 200 50 40 60 JUNCTION CAPACITANCE,(pF) PEAK FORWARD SURGE CURRENT,(A) 100 8.3ms Single Half Sine-Wave (JEDEC Method) 30 20 10 40 20 10 TJ =25C 6 4 2 1 .1 0 1 5 10 NUMBER OF CYCLES AT 60Hz 50 .2 .4 1.0 2 4 10 20 40 100 100 REVERSE VOLTAGE,(V) 37A-2/2