Silicon Avalanche Diodes
500 Watt Axial Leaded Transient Voltage Suppressors
RoHS
®
SA Series
100
30
Non-repetitive Pulse
Waveform Shown in Fig. 3
T
=25˚C
A
10
75
50
25
0
Exponential
P
P
T
d
1
Half SINE
T
d
P
Square
T
d
0.1
0.1s
1.0s
10s
t - Pulse Width (sec.)
100s
25 50 75
T - Ambient Temperature (˚C)
0
100 125 150 175 200
1.0ms
10ms
d
A
Fig. 1 Peak Pulse Power Rating Curve
Fig. 2 Pulse Derating Curve
6000
150
100
Uni-Directional
Bi-Directional
t =10µsec
T
=25˚C
r
J
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
T =25˚C
f=1MHZ
J
PPM
Peak Value
V =
R
1000
100
10
I
PPM
V
=50mVp-p
sig
Half Value I
PPM
2
50
0
10/1000µsec. Waveform
as defined by R.E.A
V
=Rated
R
Stand-Off Voltage
t
d
500
5
100
-Reverse Stand-Off Voltage (V)
1.0
2.0
t-Time (ms)
3.0
4.0
0
V
WM
Fig. 3 Pulse Waveform
Fig. 4- Typical Junction Capacitance
4.0
200
100
8.3 Single Half Sine-Wave
(JEDEC Method)
Undirectional Only
3.0
2.0
1.0
0
L=0.375"(9.5mm)
Lead Lengths
1.6x1.6x.040
(40x40x1mm)
Copper Heat Sinks
10
1
50
T - Lead Temperature (˚C)
10
100
25
75
0
100 125 150 175 200
Number of Cycles at 60Hz
1
Fig. 6- Maximum Non-Repetitive
Forward Surge Current
Uni-Directional Only
Fig. 5 Steady State Power
Derating Curve
288
www. lit t elf us e. c om
LITTELFUSE [ LITTELFUSE ]
