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STD320 Datasheet, PDF (4/4 Pages) Sirectifier Semiconductors – Thyristor-Diode Modules, Diode-Thyristor Modules
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STD/SDT320
Thyristor-Diode Modules, Diode-Thyristor Modules
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
3 x STD/SDT320
0.15
K/W
ZthJC
0.10
0.05
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
30°
DC
RthJC for various conduction angles d:
d
RthJC (K/W)
DC
180oC
120oC
60oC
30oC
0.112
0.113
0.114
0.115
0.115
Constants for ZthJC calculation:
i
Rthi (K/W)
ti (s)
0.000
1
0.003
0.099
10-3
10-2
10-1
100
101
s
102
2
0.0143
0.168
t
3
0.0947
0.456
0.20
K/W
ZthJK
0.15
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
30°
DC
RthJK for various conduction angles d:
d
RthJK (K/W)
DC
0.152
0.10
180oC
0.154
120oC
0.154
60oC
0.155
30oC
0.155
0.05
Constants for Z calculation:
thJK
i
Rthi (K/W)
ti (s)
0.00
1
0.003
0.099
10-3
10-2
10-1
100
101
s
102
2
0.0143
0.168
t
3
0.0947
0.456
4
0.04
1.36