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

FAST GPP DIODES

LESHAN RADIO COMP ANY , LTD.

1N4942 – 1N4948

Maximum Average

TYPE

1N4942 1N4944 1N4946 1N4947 1N4948

Trr I F = 0.5A, I R = 1.0A, I Trr T est Conditions: I F = 0.5A, I R = 1.0A, I

Maximum

Peak Reverse

Voltage

PRV

V

PK

200 400 600 800 1000

Resistive Load 60Hz

1.0

= 0.25A

RR

Rectified Current

@ Half-Wave

I O @ T

L

A

ºC

AV

75 25 5.0 1.0 1.3

= 0.25A

RR

Maximum

Forward Peak

Surge Current @

8.3ms Superimposed I

(Surge)

FM

A

PK

1.0(25.4) MIN

.034(0.9)

DIA

.028(0.7)

Maximum

Reverse

Current @ PRV

@ TA=25ºC

µAdc

.205(5.2) .166(4.2)

DO – 41

Maximum

Recovery Time

FM

V

PK

Maximum

Reverse

Trr ns

Forward

Voltage

@ TA=25ºC

I

R

I

V

FM

A

PK

Package

Dimensions

150 150 250

DO – 41

250 500

1.0(25.4) MIN

.107(2.7)

DIA

.080(2.0)

37A–1/2

LESHAN RADIO COMP ANY , LTD.

1N4942-1N4948

GPP

RATING & CHARACTERISTIC CURVES OF FAST GPP DIODE

FIG.1–TEST CIRCUIT DIAGRAM AND

REVERSE RECOVERY TIME CHARACTERISTIC

50 Ω 10 Ω

NONINDUCTIVE NONINDUCTIVE

D.U.T.

(+)

25Vdc

(APPROX)

(-)

1Ω

OSCILLOSCOPE

NON. INDUCTIVE

(NOTE 1)

NOTES:1.Rise Time=7ns max.

Input Impedance=1megohm.22pF.

2.Rise Time=10ns max. Source Impedance=50 ohms.

FIG. 3 – TYPICAL REVERSE

CHARACTERISTICS

20 10

1.0

TJ =150ºC

TJ =50ºC

(-)

PULSE

GENERATOR

(NOTE 2)

(+)

+0.5A

-0.25A

-1.0A

Trr

0

1cm

BASE FOR 50/100ns/cm

FIG. 2 – TYPICAL FORWARD

CURRENT DERATING CURVE

1.25

1.00

0.75

0.50

0.25

0

AVERAGE FORWARD CURRENT,(A)

SET TIME

25 50 75 100 125 150 175

AMBIENT TEMPER ATURE, (ºC)

FIG. 4 – TYPICAL INSTANTANEOUS

FORWARD CHARACTERISTICS

100

10

TJ =25ºC

Single Phase Half Wave 60Hz Resistive or Inductive Load

.1

TJ =25ºC

INSTANTANEOUS REVERSE CURRENT (µA)

.01

0 20 40 60 80 100 120 140

PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)

FIG. 5 – MAXINUM NON-REPETITIVE

FOWARD SURGE CURRENT

50

8.3ms Single Half Sine-Wave

40

30

20

10

PEAK FORWARD SURGE CURRENT,(A)

0

1 5 10 50 100

NUMBER OF CYCLES AT 60Hz

(JEDEC Method)

1.0

Pulse Width=300µs

INSTANTANEOUS FORWARD CURRENT, (A)

0

.4 .6 .8 1.0 1.2 1.4 1.6

INSTANTANEOUS FORWARD VOLTAGE,(V)

1% Duty Cycle

FIG. 6 – TYPICAL JUNCTION CAPACITANCE

200 100

60 40

20 10

6 4

2

JUNCTION CAPACITANCE,(pF)

1

.1 .2 .4 1.0 2 4 10 20 40 100

TJ =25ºC

REVERSE VOLTAGE,(V)

37A–2/2

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