PSKH95 Datasheet, PDF (4/4 Pages) Powersem GmbH – Thyristor/Diode Modules

Fig. 7 Three phase AC-controller:
Power dissipation versus RMS
output current and ambient
temperature
3 x PSKH 95 or
3 x PSKT 95
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)
0.22
0.23
0.25
0.27
0.28
Constants for Z_thJC calculation:
i
R (K/W) t (s)
thi
i
1
0.0066
0.0019
2
0.0678
0.0477
3
0.1456
0.344
Fig. 9 Transient thermal impedance
junction to heatsink (per thyristor
or diode)
R for various conduction angles d:
thJK
d
DC
180°
120°
60°
30°
R_thJK (K/W)
0.42
0.43
0.45
0.47
0.48
Constants for Z_thJK calculation:
i
R (K/W) t (s)
thi
i
1
0.0066
0.0019
2
0.0678
0.0477
3
0.1456
0.344
4
0.2
1.32
POWERSEM GmbH, Walpersdorfer Str. 53  2002 POWERSEM reserves the right to change limits, test conditions and dimensions
D - 91126 Schwabach
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20