Littelfuse SAC Series - Manual (Page 2)

Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Axial Leaded – 500W > SAC series
Ratings and Characteristic Curves
(T
A
=25°C unless otherwise noted)
Low Capacitance
Application Note: Device must be used with two
units in parallel, opposite in polarity as shown in
circuit for AC signal line protection.
Figure 4 - AC Line Protection Application
0.1
1
10
100
1000
0.000001 0.00001 0.0001 0.001
P PPM
-Peak Pulse Power (kW
)
t
d
-Pulse Width (Sec.)
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
25
50
75
100
0 25 50 75 100 125 150 175
Percentage of Rated Power (%
)
T
L
Lead Temperature (ºC)
Average Power
Peak Power
(Single Pulse)
0
0.5
1
1.5
2
2.5
3
3.5
0 25 50 75 100 125 150 175 200
T
L
-Lead Temperature (ºC)
Steady State Power dissipation (W)
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
Figure 3 - Pulse Waveform
Figure 5 - Steady State Power Derating Curve