SMF5.0AT1G Series, SZSMF5.0AT1G Series
TYPICAL PROTECTION CIRCUIT
Z
in
V
in
LOAD
V
L
10,000
P
P
, PEAK POWER (WATTS)
VALUE (%)
1000
100
PULSE WIDTH (t
P
) IS DEFINED
AS THAT POINT WHERE THE PEAK
t
r
CURRENT DECAYS TO 50%
OF I
RSM
.
t
r
≤
10
ms
PEAK VALUE
−
I
RSM
100
50
t
P
I
HALF VALUE
−
RSM
2
10
1.0
10
100
t
P
, PULSE WIDTH (ms)
1000
10,000
0
0
1
2
3
4
t, TIME (ms)
Figure 1. Pulse Rating Curve
Figure 2. 10 X 1000
ms
Pulse Waveform
100
% OF PEAK PULSE CURRENT
90
80
70
60
50
40
30
20
10
0
0
t
r
PEAK VALUE I
RSM
@ 8
ms
PULSE WIDTH (t
P
) IS DEFINED
AS THAT POINT WHERE THE
PEAK CURRENT DECAY = 8
ms
HALF VALUE I
RSM
/2 @ 20
ms
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ T
A
= 25°C
160
140
120
100
80
60
40
20
0
0
25
50
75
100
125
150
t
P
20
40
t, TIME (ms)
60
80
T
A
, AMBIENT TEMPERATURE (°C)
Figure 3. 8 X 20
ms
Pulse Waveform
Figure 4. Pulse Derating Curve
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