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Dated : 12/04/2003
SEMTECH ELECTRONICS LTD.
(Subsidiary of Semtech International Holdings Limited, acompany
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
HER301 THRU HER308
PEAK FORWARD SURGE CURRENT
NUMBER OF CYCLES AT 60 Hz
4
1
2
60
90
30
120
0
150
640 60
20
100
10
0
0.01
0.1
1
HER308
Tj=25 C
1.0
FORWARD VOLTAGE
VOLTS
0.6
0.2 0.4
0.8
HER301
TYPICAL
1.2 1.4 1.6
o
10
FORWARD CHARACTERISTICS
TYPICAL FORWARD CURRENT DERATING
AMBIENT TEMPERATURE, C
3.0
50
25
0
1.0
2.0
4.0
150
125
75 100
200
175
o
0.375" (9.5mm) LENGTH
PERCENT OF RATED PEAK REVERSE VOLTAGE, (%)
0.01
0
0.1
1
20
40
60
80
Tj=25 C
o
140
100
120
10
100
TYPICAL REVERSE LEAKAGE
CHARACTERISTICS
Tj=150 C
o
Tj =100 C
o
+0.5A
-1.0A
-0.25A
REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
50
NONINDUCTIVE
(+)
25Vdc
(appox)
(-)
NOTES:1. Rise Time=7ns max. Input Impedance=
1 megohm 22 pf
2. Rise Time=10ns max. Sourse Impedance=
50 ohms
PULSE
GENERATOR
(NOTE 2)
OSCILLOSCOPE
(NOTE 1)
1
NON
INDUCTIVE
10
NONINDUCTIVE
DUT
SET TIME BASE FOR
50ns/cm
1cm
0
trr
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