RATINGS AND CHARACTERISTIC CURVES BY251 THRU BY255
FIG. 1- FORWARD CURRENT DERATING CURVE
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
150
125
100
75
3.0
2.4
1.8
1.2
0.6
0
Single Phase
Half Wave 60Hz
Resistive or
inductive Load
8.3ms SINGLE HALF SINE-WAVE
50
(JEDEC Method)
0
25
50
75
100
125
150
175
25
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=150 C
TJ=100 C
1
0.1
TJ=25 C
PULSE WIDTH=300 ms
1%DUTY CYCLE
1
0.1
0.01
0.01
TJ=25 C
0.6
0.8
1.0
1.2
1.4
1.5
0
20
40
60
80
100
INSTANTANEOUS FORWARD VOLEAGE,
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
0.1
0.01
0.1
1
10
100
1
0.1
1.0
10
100
REVERSE VOLTAGE,VOLTS
t,PULSE DURATION,sec.
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