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