25

0.8

1.0

0

0.6

0.4

0.2

0

75

50

175

100

125

150

RATING AND CHARACTERISTICS CURVES ( SM4933 THRU SM4937 )

FIG.2 TYPICAL FORWARD CURRENT

DERATING CURVE

FIG.1 TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC

PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)

0

0.1

10

1.0

1000

100

60

20

40

80

100

120

140

FIG.3 TYPICAL REVERSE

CHARACTERISTICS

trr

IFM 1.0

i(t)

0

IRM (REC)

1cm

SET TIME BASE FOR 50/100 ns/cm

Single Phase

Half Wave 60Hz

Resistive or

Inductive Load

8

7

6

5

4

3

2

1

115Va 10K

60Hz 2W

C.P.CLARE

HPG 1002

30 Vdc

CONSTANT VOLTAGE

SUPPLY

3.8uH

/1.4

1 AMP

SLO-BLO

FUSE

C1

1.0uF

300V

30

50W

NON-INDUCTIVE

UNIT

UNDER TEST

R2

1

10W

NON-

INDUCTIVE

C1

1.0uF

300V

1.0 Adc FROM

CONSTANT

VOLTAGE SUPPLY

RIPPLE = 3mVrms MAX

MINIMIZE ALL LEAD LENGTHS

A-TEKTRONIX 545A. K PLUG IN

PRE AMP P6000 PROBE OR EQUIVALENT

R1-ADJUSTED FOR 1.4£[ BETWEEN

POINT 2 OF RELAY AND RECTIFIER

INDUCTIVE = 3.8uH

Zout 11/2 MAX

DC to 2kHz

R2-TEN-1W 10 % CARBON CORE

IN PARALLEL

TA = 25

FOR RECTIFIER

10

0

di/dt = 50A/mS