STT200
Thyristor-Thyristor Modules
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
3 x STT200
0.15
K/W
30°
DC
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
R
thJC
for various conduction angles d:
Z
thJC
0.10
d
DC
180
o
C
120
o
C
60
o
C
30
o
C
R
thJC
(K/W)
0.129
0.131
0.131
0.132
0.132
0.05
Constants for Z
thJC
calculation:
i
0.00
10
-3
10
-2
10
-1
10
0
10
1
s
10
2
R
thi
(K/W)
0.0035
0.0165
0.1091
t
i
(s)
0.099
0.168
0.456
t
1
2
3
0.20
K/W
30°
DC
0.15
Z
thJK
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R
thJK
for various conduction angles d:
d
R
thJK
(K/W)
0.169
0.171
0.172
0.172
0.173
DC
180
o
C
120
o
C
60
o
C
30
o
C
0.10
0.05
Constants for Z
thJK
calculation:
3 x STT200
i
10
0
10
1
s
10
2
R
thi
(K/W)
0.0033
0.0159
0.1053
0.04
t
i
(s)
0.099
0.168
0.456
1.36
0.00
10
-3
10
-2
10
-1
t
1
2
3
4
SIRECTIFIER [ SIRECTIFIER SEMICONDUCTORS ]
