
Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Axial Leaded – 500W > SA series
I
PPM
- Peak Pulse Current, % I
RSM
0
0
50
100
150
1.0 2.0 3.0 4.0
t
r
=10µsec
Peak Value
I
PPM
I
PPM
2
T
J
=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
PPM
10/1000µsec. Waveform
as defined by R.E.A
t
d
t-Time (ms)
Half Value
I
PPM
( )
0
20
40
60
80
0255075 100 125 150
A
-Ambient temperature (ºC)
PP
PP
Derating in Percentage %
1
10
100
1000
10000
1.0 10.0 100.0 1000.0
=25C
1.0MHz
ig=50mVp-p
Uni-directional @ V
R
Bi-directional @ V
R
V
BR
- Reverse Breakdown Voltage (V)
0
0.5
1
1.5
2
2.5
3
3.5
0255075100 125150 175200
Steady State Power Dissipation (W)
T
L
- Lead Temperature(ºC)
L = 0.375” (9.5mm)
Lead Lengths
Figure 3 - Pulse Derating Curve Figure 4 - Pulse Waveform
Figure 5 - Typical Junction Capacitance Figure 6 - Steady State Power Derating Curve
0
10
20
30
40
50
60
70
80
110 100
Number of Cycles at 60 Hz
I
FSM
- Peak Forward Surge Current
(A)
Figure 7 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
Ratings and Characteristic Curves (T
A
=25°C unless otherwise noted) (Continued)
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