RATINGS AND CHARACTERISTIC CURVES HER251 THRU HER258
FIG. 1- FORWARD CURRENT DERATING CURVE
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
60
50
40
30
3
2.0
1
Single Phase Half Wave 60HZ
Resistive or Inductive Load
0
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
20
10
0
25
50
75
100
125
150
175
200
1
10
100
AMBIENT TEMPERATURE,
C
NUMBER OF CYCLES AT 60 Hz
FIG. 3-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
1,000
100
10
20
10
TJ=25 C
PULSE WIDTH=300 µs
1%DUTY CYCLE
TJ=100 C
1
0.1
1
HER251-HER253
HER254-HER255
HER256-HER258
TJ=25 C
0.1
0.01
0.01
0.2
0.6
1.0
1.4
1.8 2.0
0
20
40
60
80
100
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
PERCENT OF PEAK REVERSE VOLTAGE,%
FIG. 5-TYPICAL JUNCTION CAPACITANCE
FIG. 6-TYPICAL TRANSIENT THERMAL IMPEDANCE
200
100
100
10
1
TJ=25 C
10
HER251-HER255
HER256-HER258
0.1
0.01
0.1
1
10
100
1
0.1
1.0
10
100
REVERSE VOLTAGE,VOLTS
t,PULSE DURATION,sec.
MDD ELECTRONIC