ZOWIE 1N4948, 1N4947, 1N4946, 1N4944, 1N4942 Datasheet

0.107(2.7)

0.080(2.0)
DIA.

0.205(5.2)

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

MIN.

1.0(25.4)

0.160(4.1)

*High current capability
*High surge current capability

MIN.

1.0(25.4)

0.034(0.86)

0.028(0.71)
DIA.

*Dimensions in inches and (millimeters)

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Ratings at 25 oC ambient temperature
unless otherwise specified.

Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage

Maximum average forward rectified current at TA=75oC
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=55oC

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

SYMBOLS

VRRM
VRMS

VDC
I(AV)

IFSM

VF

IR(AV) 100 uA

1N4942

200
140
200

1N4944

400
280
400

1N4946

600
420
600

1.0

30

1.3

1N4947

800
560
800

1N4948

1000

700

1000

UNITS

Volts
Volts
Volts

Amps

Amps

Volts

Maximum DC reverse current
at rated DC blocking voltage

Typical junction capacitance ( NOTE 1 )

Maximum reverse recovery time ( NOTE 2 ) trr 250150 500

Operating junction and storage temperature range

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

TA=25oC

IR

CJ

TJ,TSTG

5.0

15

-65 to +150

Zowie Technology Corporation

uA

pF

nS

o

C

RATINGS AND CHARACTERISTIC CURVES 1N4942 THRU 1N4948

FIG.1 - FORWARD CURRENT DERATING CURVE

FIG.2 - MAXIMUM NON-REPETITIVE

PEAK FORWARD SURGE CURRENT

1.2

1.0

Single Phase
Half Wave 60Hz
Resistive or
Inductive Load

50

8.3ms SINGLE HALF SINE-WAVE

40

(JEDEC Method)

0.8
30

0.6
20

0.4

CURRENT, AMPERES

0.2

AVERAGE FORWARD RECTIFIED

0

0 25 50 75 100 125 150 175

AMBIENT TEMPERATURE, oC

FIG.3 - TYPICAL INSTANTANEOUS

AMPERES

10

PEAK FORWARD SURGE CURRENT,

0

1 10 100

NUMBER OF CYCLES AT 60Hz

FIG.4 - TYPICAL REVERSE CHARACTERISTICS

FORWARD CHARACTERISTICS

10.00

20
10

PULSE WIDTH=300uS
1% DUTY CYCLE

1.00

1.0

TJ=125oC

AMPERES

0.10

0.1

CURRENT, MICROAMPERES

IINSTANTANEOUS FORWARD CURRENT,

0.01

0.4 0.6 0.8 1.0 1.2 1.4 1.6

INSTANTANEOUS REVERSE LEAKAGE

0.01
0 20

40 60 80 100 120 140

PERCENT OF RATED PEAK REVERSE VOLTAGE,%

TJ=75oC

TJ=25oC

INSTANTANEOUS FORWARD VOLTAGE,

VOLTS

FIG.5 - TYPICAL JUNCTION CAPACITANCE FIG.6 - TEST CIRCUIT DIAGRAM AND REVERSE

200
100

60

TJ = 25oC

50
NONINDUCTIVE

40

20
10

( + )

25 Vdc

( approx )

( - )

6
4

JUNCTION CAPACITANCE, pF

2
1

.1

.2 .4 1.0 2 4 10 20 40 100

NOTES :1. Rise Time = 7ns max. Input Impedance=
 1 megohm. 22pF.
 2. Rise Time = 10ns max. Source Impedance=
 50 ohms.

RECOVERY TIME CHARACTERISTICS

10
NONINDUCTIVE

D.U.T.

1
NON­INDUCTIVE

OSCILLOSCOPE

( NOTE 1 )

PULSE

GENERATOR

( NOTE 2 )

+0.5A

( - )

-0.25A

( + )

-1.0A

trr

0

SET TIME BASE
FOR 50/100 ns/cm

REVERSE VOLTAGE, VOLTS

REV. : 0

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