SMF54A 查看數據表（PDF） - Littelfuse, Inc
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SMF54A Datasheet PDF : 6 Pages
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Transient Voltage Suppression Diodes
Surface Mount – 200W > SMF Series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued)
Figure 3 - Peak Pulse Power Derating Curve
Figure 4 - Pulse Waveform - 10/1000µS
100
80
60
40
20
150
100
50
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Half Value
( ) IPPM IPPM
2
10/1000µsec. Waveform
as defined by R.E.A
0
0
25 50 75 100 125 150 175
TJ - Initial Junction Temperature (ºC)
Figure 5 - Forward Voltage
td
0
0
1.0
2.0
3.0
4.0
t-Time (ms)
Figure 6 - Typical Junction Capacitance
0.9
0.8
0.7
0.6
0.5
0.4
0
-55
10
75
140
Temperature (ºC)
Figure 7 - Peak Forward Voltage Drop vs.
Peak Forward Current
10
1
0.1
0.01
0
0.5
1
1.5
2
2.5
3
3.5
4
V F- Peak Forward Voltage(V)
10000
1000
100
Measured@Vr=0v
Measured@50%Vr
Figu1re0 8 - Maximum Non-Repetitive Forward Surge
1 Current Uni-Directi1o0nal Only
100
Vbr - Reverse breakdown voltage
35
30
25
20
15
10
5
0
1
10
100
Number of Cycles at 60 Hz
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/06/17
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