Page 3

.4

.6

.8

1.0

1.2

1.4

.003

.03

.3

3.0

10

Rating and characteristic curves (SFM31 THRU SFM38)

FIG.1-TYPICAL FORWARD

CHARACTERISTICS

FORWARD VOLTAGE,(V)

Pulse Width 300us

1% Duty Cycle

(+)

(+)

25Vdc

(approx.)

( )

( )

PULSE

GENERATOR

(NOTE 2)

OSCILLISCOPE

(NOTE 1)

1

NON-

INDUCTIVE

W

NOTES: 1. Rise Time= 7ns max., Input Impedance= 1 megohm.22pF.

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

+0.5A

0

-0.25A

-1.0A

|

|

|

|

|

|

|

|

1cm

SET TIME BASE FOR

50 / 10ns / cm

trr

D.U.T.

FIG.3- TEST CIRCUIT DIAGRAM AND REVERSE

RECOVERY TIME CHARACTERISTICS

10

NONINDUCTIVE

50

NONINDUCTIVE

W

W

T =25 C

J

FIG.2-TYPICAL FORWARD CURRENT

0.6

1.2

1.8

2.4

3.0

3.6

DERATING CURVE

AMBIENT TEMPERATURE (°C)

1.6

1.8

0

25

50

75

100

125

150

175

0

FIG.4-MAXIMUM NON-REPETITIVE FORWARD

SURGE CURRENT

20

0

40

60

80

100

NUMBER OF CYCLES AT 60Hz

1

10

5

50

100

T =25 C

J

8.3ms Single Half

Sine Wave

JEDEC method

http://www.formosams.com/

TEL:886-2-22696661

FAX:886-2-22696141

Document ID

Issued Date

Revised Date

Revision

Page.

DS-121405

2008/02/10

2010/03/10

D

7

FIG.5-TYPICAL JUNCTION CAPACITANCE

REVERSE VOLTAGE,(V)

0.1

10

1000

1.0

4.0

10

100

100

TJ = 25°C

f = 1.0 MHZ