STT70 Sirectifier Semiconductors, STT70 Datasheet - Page 4

• Manufacturer Part Number: STT70
• Description: Thyristor-Thyristor Modules
• Manufacturer: Sirectifier Semiconductors

STT70
STT70
3 x STT70
Thyristor-Thyristor Modules
STT70
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
180
120
180
120
DC
DC
for various conduction angles d:
for various conduction angles d:
d
60
30
d
60
30
Power dissipation versus RMS
output current and ambient
temperature
junction to case (per thyristor or
diode)
junction to heatsink (per thyristor
or diode)
o
o
o
o
o
o
o
o
C
C
C
C
C
C
C
C
R
0.008
0.054
0.238
R
0.008
0.054
0.238
0.2
thi
thi
thJC
thJK
R
0.3
0.31
0.33
0.35
0.37
(K/W)
R
0.5
0.51
0.53
0.55
0.57
(K/W)
thJC
thJK
calculation:
calculation:
(K/W)
(K/W)
t
0.0019
0.047
0.3
t
0.0019
0.047
0.3
1.25
i
i
(s)
(s)