MDD142 查看數據表（PDF） - IXYS CORPORATION
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MDD142 Datasheet PDF : 3 Pages
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MDD 142
Fig. 5 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
Fig. 6 Transient thermal impedance
junction to case (per diode)
RthJC for various conduction angles d:
d
DC
180°
120°
60°
30°
RthJC (K/W)
0.210
0.223
0.233
0.260
0.295
Constants for Z calculation:
thJC
i
Rthi (K/W)
ti (s)
1
0.0087
0.001
2
0.0163
0.065
3
0.185
0.4
Fig. 7 Transient thermal impedance
junction to heatsink (per diode)
RthJK for various conduction angles d:
d
DC
180°
120°
60°
30°
R (K/W)
thJK
0.31
0.323
0.333
0.360
0.395
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
1
0.0087
0.001
2
0.0163
0.065
3
0.185
0.4
4
0.1
1.29
3-3
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