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70-W424NIA800SH-M800F Datasheet, PDF (22/32 Pages) Vincotech – Snubber diode for optional asymmetrical inductance
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70-W424NIA800SH-M800F
datasheet
Snubber Diode
Figure 1
Typical thyristor forward current as
a function of forward voltage
I F= f(V F)
1200
1000
800
600
400
200
0
0
1
2
3
At
tp =
250
µs
Snubber Diode
Figure 2
Thyristor transient thermal impedance
as a function of pulse width
Z thJH = f(t p)
100
Snubber Diode
10-1
10-2
10-3
4
V F (V)
5
10-5
10-4
10-3
10-2
10-1
100
t p (s) 10110
At
D=
R thJH =
tp / T
0,294
K/W
Figure 3
Power dissipation as a
function of heatsink temperature
P tot = f(T h)
600
500
400
300
200
100
0
0
50
100
At
Tj =
175
ºC
Snubber Diode
Figure 4
Forward current as a
function of heatsink temperature
I F = f(T h)
250
200
150
100
50
0
150
T h ( o C) 200
0
50
100
At
Tj =
175
ºC
Snubber Diode
150
T h ( o C) 200
copyright Vincotech
22
14 Nov 2015 / Revision 4
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