Littelfuse SA Series - Manual (Page 4)

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
- P
eak P
ulse Cur
rent, %
I RSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10µsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000µsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM
( )
0
20
40
60
80
100
0 25 50 75 100 125 150 175
T
A
-Ambient temperature (ºC)
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage
%
1
10
100
1000
10000
1.0 10.0 100.0 1000.0
Cj
(p
F)
Tj=25C
f=1.0MHz
Vsig=50mVp-p
Uni-directional V=0V
Bi-directional V=0V
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
0 25 50 75 100 125 150 175 200
St
ea
dy
St
ate
Po
wer
Di
ssi
pa
tion
(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
1 10 100
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)