MCC 250
MCD 250
Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
0.15
Fig. 8 Transient thermal impedance
junction to case (per thyristor or
Z thJC
K/W
30°
DC
diode)
R thJC for various conduction angles d:
0.10
0.05
d
DC
180°C
120°C
60°C
30°C
R thJC (K/W)
0.129
0.131
0.131
0.132
0.132
Constants for Z thJC calculation:
i
R thi (K/W)
t i (s)
0.00
10 -3
10 -2
10 -1
10 0
10 1
t
s
10 2
1
2
3
0.0035
0.0165
0.1091
0.099
0.168
0.456
0.20
Fig. 9 Transient thermal impedance
Z thJK
K/W
0.15
30°
DC
junction to heatsink (per thyristor
or diode)
R thJK for various conduction angles d:
R thJK (K/W)
d
DC
0.169
180°C
0.171
0.10
120°C
60°C
30°C
0.172
0.172
0.173
0.05
Constants for Z thJK calculation:
i
1
R thi (K/W)
0.0033
t i (s)
0.099
0.00
2
0.0159
0.168
10 -3
10 -2
10 -1
10 0
10 1
t
s
10 2
3
4
0.1053
0.04
0.456
1.36
IXYS reserves the right to change limits, test conditions and dimensions
4-4
? 2004 IXYS All rights reserved
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