STT320
Thyristor-Thyristor Modules
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
3 x STT320
0.15
K/W
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
30°
DC
Z
thJC
0.10
R
thJC
for various conduction angles d:
d
DC
180
o
C
120
o
C
60
o
C
30
o
C
R
thJC
(K/W)
0.112
0.113
0.114
0.115
0.115
0.05
Constants for Z
thJC
calculation:
i
0
0.00
10
-3
10
-2
10
-1
10
0
10
1
s
10
2
R
thi
(K/W)
0.003
0.0143
0.0947
t
i
(s)
0.099
0.168
0.456
t
1
2
3
0.20
K/W
Z
thJK
0.15
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
30°
DC
R
thJK
for various conduction angles d:
d
R
thJK
(K/W)
0.152
0.154
0.154
0.155
0.155
DC
180
o
C
120
o
C
60
o
C
30
o
C
0.10
0.05
Constants for Z
thJK
calculation:
i
0
0.00
10
-3
10
-2
10
-1
10
0
10
1
s
10
2
R
thi
(K/W)
0.003
0.0143
0.0947
0.04
t
i
(s)
0.099
0.168
0.456
1.36
t
1
2
3
4
SIRECTIFIER [ SIRECTIFIER SEMICONDUCTORS ]
