CURRENT 1.0 Ampere VOLTAGE 200 to 1000 Volts 1N4942G THRU 1N4948G Features * Fast switching * Low leakage current * Low forward voltage drop * High current capability * Glass passivated junction * High reliability capability DO-41 0.107(2.7) 0.080(2.0) DIA. 1.0(25.4) MIN. 0.205(5.2) 0.166(4.2) Mechanical Data * Case : JEDEC DO-41 molded plastic body * Terminals : Plated axial lead solderable per MIL-STD-750, method 2026 * Polarity : Color band denotes cathode end * Mounting Position : Any * Weight : 0.012 ounce, 0.34 gram 1.0(25.4) MIN. 0.034(0.9) 0.028(0.7) DIA. Dimensions in inches and (millimeters) Maximum Ratings And Electrical Characteristics (Ratings at 25 ambient temperature unless otherwise specified, Single phase, half wave 60Hz, resistive or inductive load. For capacitive load, derate by 20%) Symbols 1N4942G 1N4944G 1N4946G 1N4947G 1N4948G 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 0.375"(9.5mm) lead length at TA=55 I(AV) 1.0 Amp Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) IFSM 30.0 Amps VF 1.3 Volts Maximum instantaneous forward voltage at 1.0A Maximum DC reverse current at rated DC blocking voltage Maximum full load reverse current full cycle average. 0.375"(9.5mm) lead length at TL=55 5.0 100 Maximum reverse recovery time (Note 1) Trr Typical junction capacitance (Note 2) CJ Operating junction and storage temperature range A IR TJ TSTG Notes: (1) Test conditions: IF=0.5A, IR=1.0A, Irr=0.25A. (2) Measured at 1MHz and applied reverse voltage of 4.0 Volts. 150 250 15.0 -65 to +175 500 ns pF RATINGS AND CHARACTERISTIC CURVES 1N4942G THRU 1N4948G FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE FIG.2-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT 50 1.25 8.3m SINGLE HALF SINE WAVE (JEDEC Method) SINGLE PHASE HALF WAVE 60Hz RESISTIVE OR INDUCTIVE LOAD 40 1.00 PEAK FORWARD SURGE CURRENT(AMPERES) AVERAGE FORWARD CURRENT(A) 1.50 0.75 0.50 0.25 0 0 25 50 75 100 125 150 30 20 10 175 0 AMBIENT TEMPERATURE ( ) FIG.3-TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 3 1 0.3 0.1 TJ=75 0.1 0.06 0.04 TJ=25 0.02 1% Duty Cycle 1.2 100 0.2 0.01 0.01 1.0 60 TJ=125 1.0 0.6 0.4 Pulse Width=300mS 0.8 40 2.0 TJ=25 0.6 4 6 8 10 20 NUMBER OF CYCLES AT 60Hz 20 10 6.0 4.0 INSTANTANEOUS REVERSE CURRENT ,(mA) INSTANTANEOUS FORWARD CURRENT(AMPERES) 10 0.4 2 FIG.4-TYPICAL REVERSE CHARACTERISTICS 20 0.03 1 1.4 1.6 0 20 1.8 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE(%) INSTANTANEOUS FORWARD VOLTAGE (VOLTS) FIG.6-TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC FIG.5-TYPICAL JUNCTION CAPACITANCE JUNCTION CAPACITANCE(pF) 200 100 50W NON INDUCTIVE 60 10W NON INDUCTIVE +0.5A 40 (+) 20 D.U.T. PULSE GENERATOR (NOTE2) 25Vdc (APPROX) 10 6 ( TJ=25 ) 2 1 0.4 1 2 4 REVERSE VOLTAGE. (V) 0 -0.25A 1W NON INDUCTIVE 4 0.1 0.2 Trr 10 20 40 100 OSCILLOSCOPE (NOTE1) NOTES : 1.Rise Time=7ns max. input impedance=1 megohm 22pF 2.Rise Time=10ns max. source impedance =50 ohms -1.0A 1cm SET TIME BASE FOR 50/100 ns/cm