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1N4947 Dataheets PDF



Part Number 1N4947
Manufacturers Formosa MS
Logo Formosa MS
Description 1.0 AMP FAST RECOVERY RECTIFIERS
Datasheet 1N4947 Datasheet1N4947 Datasheet (PDF)

1N4942 1.0 AMP FAST RECOVERY RECTIFIERS THRU 1N4948 VOLTAGE RANGE 200 to 1000 Volts CURRENT FEATURES * Low forward voltage drop * Low leakage current * High reliability * High current capability 1.0 Ampere DO-41 .107(2.7) .080(2.0) DIA. 1.0(25.4) MIN. MECHANICAL DATA * Case: Molded plastic * Epoxy: UL 94V-0 rate flame retardant * Lead: Axial leads, solderable per MIL-STD-202, method 208 guranteed * Polarity: Color band denotes cathode end * Mounting position: Any * Weight: 0.34 grams .034.

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1N4942 1.0 AMP FAST RECOVERY RECTIFIERS THRU 1N4948 VOLTAGE RANGE 200 to 1000 Volts CURRENT FEATURES * Low forward voltage drop * Low leakage current * High reliability * High current capability 1.0 Ampere DO-41 .107(2.7) .080(2.0) DIA. 1.0(25.4) MIN. MECHANICAL DATA * Case: Molded plastic * Epoxy: UL 94V-0 rate flame retardant * Lead: Axial leads, solderable per MIL-STD-202, method 208 guranteed * Polarity: Color band denotes cathode end * Mounting position: Any * Weight: 0.34 grams .034(.9) .028(.7) DIA. .205(5.2) .166(4.2) 1.0(25.4) MIN. Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating 25 C ambient temperature uniess otherwies specified. Single phase half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. TYPE NUMBER Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Maximum DC Blocking Voltage Maximum Average Forward Rectified Current .375"(9.5mm) Lead Length at Ta=75 C Peak Forward Surge Current, 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) Maximum Instantaneous Forward Voltage at 1.0A Maximum DC Reverse Current Ta=25 C at Rated DC Blocking Voltage Ta=100 C Maximum Reverse Recovery Time (Note 1) Typical Junction Capacitance (Note 2) Operating and Storage Temperature Range TJ, TSTG NOTES: 1N4942 200 140 200 1N4944 400 280 400 1N4946 600 420 600 1.0 30 1.3 5.0 100 1N4947 800 560 800 1N4948 1000 700 1000 UNITS V V V A A V mA 150 -65 250 15 +150 500 mA nS pF C 1. Reverse Recovery Time test condition: IF=0.5A, IR=1.0A, IRR=0.25A 2. Measured at 1MHz and applied reverse voltage of 4.0V D.C. RATING AND CHARACTERISTIC CURVES (1N4942 THRU 1N4948) FIG.1-TYPICAL FORWARD CHARACTERISTICS AVERAGE FORWARD CURRENT,(A) 1.2 1.0 0.8 0.6 0.4 0.2 0 0 Tj=25 C Pulse Width 300us 1% Duty Cycle Single Phase Half Wave 60Hz Resistive Or Inductive Load 0.375"(9.5mm) Lead Length FIG.2-TYPICAL FORWARD CURRENT DERATING CURVE 50 INSTANTANEOUS FORWARD CURRENT,(A) 10 3.0 1.0 20 40 60 80 100 120 140 160 180 200 AMBIENT TEMPERATURE,( C) 0.1 FIG.4-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT PEAK FORWARD SURGE CURRENT,(A) 30 .01 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 FORWARD VOLT AGE,(V) 24 FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS 50W NONINDUCTIVE 10W NONINDUCTIVE 18 Tj=25 C 8.3ms Single Half Sine Wave JEDEC method 12 6 (+) 25Vdc (approx.) ( ) 1W NONINDUCTIVE OSCILLISCOPE (NOTE 1) D.U.T. ( ) PULSE GENERATOR (NOTE 2) (+) 0 1 5 10 50 100 NUMBER OF CYCLES AT 60Hz NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF. 2. Rise Time= 10ns max., Source Impedance= 50 ohms. FIG.5-TYPICAL JUNCTION CAPACITANCE 35 30 25 20 15 10 5 trr +0.5A | | | | | | | | 0 -0.25A JUNCTION CAPACITANCE,(pF) -1.0A 1cm SET TIME BASE FOR 50 / 10ns / cm 0 .01 .05 .1 .5 1 5 10 50 100 REVERSE VOLTAGE,(V) .


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