Page 3

Rating and characteristic curves (HER301 THRU HER308)

FIG.1-TYPICAL FORWARD

CHARACTERISTICS

FIG.4-MAXIMUM NON-REPETITIVE FORWARD

SURGE CURRENT

FIG.5-TYPICAL JUNCTION CAPACITANCE

FORWARD VOLTAGE,(V)

0

30

60

120

150

90

(+)

(+)

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

FIG.2-TYPICAL FORWARD CURRENT

0.5

0

1.0

1.5

2.0

2.5

3.0

DERATING CURVE

REVERSE VOLTAGE,(V)

175

150

125

100

75

50

25

0

.01

.05

.1

.5

1

5

10

50

100

NUMBER OF CYCLES AT 60Hz

1

10

5

50

100

T =25 C

J

8.3ms Single Half

Sine Wave

JEDEC method

Single Phase

Half Wave 60Hz

Resistive Or Inductive Load

0.375"(9.5mm) Lead Length

AMBIENT TEMPERATURE (°C)

0

25

50

75

100

125

150

175

Document ID

Issued Date

Revised Date

Revision

Page.

http://www.formosams.com/

TEL:886-2-22696661

FAX:886-2-22696141

DS-222308

2008/02/10

2010/03/10

C

6

1.0

.1

.01

10

20

2.5

2.0

1.5

1.0

.5

0

3.0

3.5

Pulse Width=300uS

1% Duty Cycle

TJ = 25

HER301~HER303

HER304~HER305

HER306~HER308