SM4T30 STMicroelectronics, SM4T30 Datasheet - Page 4

• Manufacturer Part Number: SM4T30
• Description: TRANSIL
• Manufacturer: STMicroelectronics

SM4Txx
4/7
Note : The curves of the figure 3 are specified for a junction temperature of 25 C before surge.
The given results may be extrapolated for other junction temperatures by using the following formula :
For intermediate voltages, extrapolate the given results.
V
Figure 2 : Peak pulse power versus exponential pulse duration.
Figure 3 : Clamping voltage versus peak pulse current.
(BR)
1000
= T
100
10
100000
1
0.1
10000
1000
V
(V(BR)) *
100
CL
SM4T 220A
SM4T 150A
SM4T 68A
SM4T 39A
SM4T 22A
SM4T 10A
SM4T 6V8A
10
exponential waveform t = 20 s ________
0.001
Pp (W)
(V)
[T
a
-25]
*
0.01
V
1
(BR)
.
t = 1 ms ——————-
t =10 ms ...............
0.1
10
1
100
50
0
% Ipp
100
t r
Tj initial = 25˚C
tp (mS ) EXPO.
10
Tj initial = 25˚C
t
t < 10
r
Ipp (A)
s
100
1000
t