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1N4942 THRU 1N4948
FAST RECOVERY RECTIFIER Reverse Voltage - 200 to 1000 Volts Forward Current - 1.0 Ampere
DO-204AL
FEATURES
* * * * * High switching capability Low leakage Low forward voltage drop High current capability High surge current capability
0.107(2.7) 0.080(2.0) DIA.
0.205(5.2) 0.160(4.1)
1.0(25.4) MIN.
1.0(25.4) MIN.
MECHANICAL DATA
Case : JEDEC DO-204AL molded plastic Epoxy : UL 94V-O rate flame retardant Lead : MIL-STD-202F method 208C guaranteed Mounting Position : Any Weight : 0.33 gram
0.034(0.86) 0.028(0.71) DIA.
*Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified. Maximum repetitive peak reverse voltage Maximum RMS voltage Maximum DC blocking voltage Maximum average forward rectified current at TA=75 C Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) Maximum instantaneous forward voltage at 1.0 A Maximum full load reverse current, full cycle average 0.375" (9.5mm) lead length at TL=55 C Maximum DC reverse current at rated DC blocking voltage Typical junction capacitance ( NOTE 1 ) Maximum reverse recovery time ( NOTE 2 ) Operating junction and storage temperature range
o o o o
SYMBOLS VRRM VRMS VDC I(AV) IFSM VF IR(AV)
1N4942
200 140 200
1N4944
400 280 400
1N4946
600 420 600
1N4947
800 560 800
1N4948
1000 700 1000
UNITS Volts Volts Volts Amps Amps Volts uA
1.0 30 1.3 100
TA=25 C
IR CJ trr TJ,TSTG 150
5.0 15 250 -65 to +150 500
uA pF nS
o
C
NOTES : (1) Measured at 1.0 MHz and applied reverse voltage of 4.0 Volts (2) Test conditions : IF 0.5A, IR=1.0A, IRR=0.25A
REV. : 0
Zowie Technology Corporation
RATINGS AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948
FIG.1 - FORWARD CURRENT DERATING CURVE 1.2 AVERAGE FORWARD RECTIFIED CURRENT, AMPERES 1.0 0.8 0.6 0.4 0.2 0 0 25 50 75 100 125
o
FIG.2 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT 50 PEAK FORWARD SURGE CURRENT, AMPERES
Single Phase Half Wave 60Hz Resistive or Inductive Load
40
8.3ms SINGLE HALF SINE-WAVE (JEDEC Method)
30
20
10
0 150 175 1 10 NUMBER OF CYCLES AT 60Hz 100 AMBIENT TEMPERATURE, C
FIG.3 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS 10.00 IINSTANTANEOUS FORWARD CURRENT, AMPERES INSTANTANEOUS REVERSE LEAKAGE CURRENT, MICROAMPERES 20 10
FIG.4 - TYPICAL REVERSE CHARACTERISTICS
PULSE WIDTH=300uS 1% DUTY CYCLE
TJ=125 C
o
1.00
1.0
TJ=75 C
o
0.10
0.1
TJ=25 C
o
0.01 0.01 0.4 0.6 0.8 1.0 1.2 1.4 1.6 INSTANTANEOUS FORWARD VOLTAGE, VOLTS 0 20 40 60 80 100 120 140 PERCENT OF RATED PEAK REVERSE VOLTAGE,%
FIG.5 - TYPICAL JUNCTION CAPACITANCE
200
JUNCTION CAPACITANCE, pF
TJ = 25 C
50 NONINDUCTIVE 10 NONINDUCTIVE
o
FIG.6 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS
100 60 40
20 10 6 4 2 1 .1 .2 .4 1.0 2 4 10 20 40 100 REVERSE VOLTAGE, VOLTS
(+) 25 Vdc ( approx ) (-)
D.U.T.
+0.5A (-)
PULSE GENERATOR ( NOTE 2 )
trr
0 -0.25A
1 NONINDUCTIVE
OSCILLOSCOPE ( NOTE 1 )
(+) -1.0A
NOTES : 1. Rise Time = 7ns max. Input Impedance= 1 megohm. 22pF. 2. Rise Time = 10ns max. Source Impedance= 50 ohms.
SET TIME BASE FOR 50/100 ns/cm
REV. : 0
Zowie Technology Corporation

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