MCC 72
MCD 72
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
diode)
R thJC for various conduction angles d:
d
DC
180°
120°
60°
30°
R thJC (K/W)
0.3
0.31
0.33
0.35
0.37
Constants for Z thJC calculation:
i
1
2
3
R thi (K/W)
0.008
0.054
0.238
t i (s)
0.0019
0.047
0.3
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R thJK for various conduction angles d:
d
DC
180°
120°
60°
30°
R thJK (K/W)
0.5
0.51
0.53
0.55
0.57
Constants for Z thJK calculation:
IXYS reserves the right to change limits, test conditions and dimensions
i
1
2
3
4
R thi (K/W)
0.008
0.054
0.238
0.2
t i (s)
0.0019
0.047
0.3
1.25
4-4
? 2004 IXYS All rights reserved
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