FIG.6 -- TYPICAL REVERSE CHARACTERISTICS

PERCENT OF RATED PEAK REVERSE VOLTAGE,

FIG.4 -- TYPICAL JUNCTION CAPACITANCE

FIG.5 -- PEAK FORWARD SURGE CURRENT

USF31 --- USF34

FIG.2 -- TYPICAL FORWARD CHARACTERISTIC

FIG.3 -- FORWARD DERATING CURVE

z

FIG.1 -- TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTIC

SET TIME BASE FOR 10/20 ns/cm

NOTES:1.RISE TIME = 7ns MAX.INPUT IMPEDANCE = 1M .22pF.

.

INSTANTANEOUS FORWARD VOLTAGE, VOLTS

AMBIENT TEMPERATURE,

NUMBER OF CYCLES AT 60Hz

REVERSE VOLTAGE,VOLTS

-1 .0 A

-0 .2 5A

0

+0.5A

1c m

PULSE

GENERATOR

(NOTE2)

D.U.T.

1

NONIN-

DUCTIVE

50

N 1.

10

N1.

OSCILLOSCOPE

(NOTE 1)

(+)

25VDC

(approx)

(-)

0

50

1

10

100

75

8.3ms Single Half

Sine-Wave

125

100

25

150

5

50

0 .1

1

10

0 .2

0 .4

1 .0

0 .0 1

0 .6

0 .8

0

100

1 .2

1 .4

0 .0 2

0 .0 4

0 .2

0 .4

2

4

20

40

. 0 1

.1

1

100

20

40

100

60

80

0

10

120

140

1

2

4

6

10

20

40

60

100

0.1 0.2

0.4

1

2

4

10

40

100

20

0

25

50

75

100

125

150

175

0

1

3

2

4

5

Single Phase

Half Wave 60HZ

Resistive or

Inductive Load

0.375"(9.5mm)Lead Length

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