STT18 Sirectifier Semiconductors, STT18 Datasheet - Page 4

• Manufacturer Part Number: STT18
• Description: Thyristor-thyristor Modules
• Manufacturer: Sirectifier Semiconductors

STT18
STT18
STT18
Thyristor-Thyristor Modules
3 x STT18
STT18
Fig. 7 Three phase AC-controller:
Fig. 8 Transient thermal impedance
R
Constants for Z
Fig. 9 Transient thermal impedance
R
Constants for Z
thJC
thJK
1
2
3
1
2
3
4
i
i
DC
180
120
180
120
DC
d
for various conduction angles d:
d
for various conduction angles d:
60
30
60
30
Power dissipation versus RMS
output current and ambient
temperature
junction to case (per thyristor)
junction to heatsink (per thyristor)
o
o
o
o
o
o
o
o
C
C
C
C
C
C
C
C
R
0.018
0.041
1.241
R
0.018
0.041
1.241
0.2
thi
thi
R
1.3
1.35
1.39
1.42
1.45
thJC
R
1.5
1.55
1.59
1.62
1.65
thJK
(K/W)
(K/W)
thJC
thJK
calculation:
calculation:
(K/W)
(K/W)
t
0.0033
0.0216
0.191
t
0.0033
0.0216
0.191
0.46
i
i
(s)
(s)