IN4944 查看數據表（PDF） - Unspecified

零件编号

产品描述 (功能)

比赛名单

IN4944

FAST RECOVERY RECTIFIER

Unspecified 

RoHS

1N4942-4948

WEJ ELECTRONIC CO.,LTD FIG.1-TYPICALFORWARDCURRENT

DERATING CURVE

1.2

1.0

0.8

0.6

Single Phase

Half Wave 60Hz

0.4

Resistive or

Inductive Load

0.2

0.375＂(9.5mm) Lead Length

0

0

25

50

75 100 125 150 175

AMBIENT TEMPERATURE,(oC)

FIG.3-TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

20

10

1.0

0.1

T j=25 oC

Pulse Width=300us

1% Duty Cycle

0.01

0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8

INSTANTANEOUS FORWARD VOLTAGE,(V)

FIG.5-TYPICAL JUNCTION CAPACITANCE

100

10

FIG.2-MAXIMUM NON-REPETITIVE PEAK

FORWARD SURGE CURRENT

30

8.3ms Single Half Sine-Wave

(JEDEC Method) T j=Tjmax

20

10

1 Cycle

0

1

2

4 6 8 10

20

40 60 80100

NUMBER OF CYCLES AT 60 Hz

FIG.4-TYPICAL REVERSE

CHARACTERISTICS

20

10

Tj=125 oC

1.0

Tj=75oC

0.1

0.01

0

Tj=25 oC

20 40 60

80

100 120 140

PERCENT OF RATED PEAK

REVERSE VOLTAGE,(%)

FIG.6-TEST CIRCUIT DIAGRAM AND

REVERSE RECOVERY TIME CHARACTERISTIC

50

NONINDUCTIVE

10

NONINDUCTIVE

Trr

+0.5A

(+)

25 Vdc

(approx.)

(-)

D . U . T.

1

(-)

PULSE

G E N E R AT I O R

(NOTE 2)

(+)

OSCILLOSCOPE

(NOTE 1)

0

-0.25A

NON

INDUCTIVE

Tj=25 oC

f=1MHz

-1.0A

Vsig=50mVp-p

NOTES: 1.Rise Time=7ns max.Input Impedance=

1cm

SET TIME BASE FOR

1 megohm.22pF

50/100ns/cm

1

0.1

1.0

10

2.Rise time=10ns max.Source Impedance=

100

50 ohms

REVRESE VOLTAGE,(V)

WEJ ELECTRONIC CO. Http:// www.wej.cn E-mail:wej@yongerjia.com

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