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PSKD312 Datasheet, PDF (3/3 Pages) Powersem GmbH – Diode Modules
3000
W
2500
Ptot
2000
1500
1000
500
CBCB6iir6rUccUuuiitt
33xx PMSDKDD331122
RthKA K/W
0.03
0.06
0.1
0.15
0.2
0.3
0.4
Fig. 6 Three phase rectifier bridge:
Power dissipation versus direct
output current and ambient
temperature
0
0
200 400 600 800 A 0
IdAVM
25
50
75
100 125 °C 150
TA
0.20
Fig. 7 Transient thermal impedance
K/W
junction to case (per diode)
0.15
ZthJC
0.10
0.05
RthJC for various conduction angles d:
d
RthJC (K/W)
DC
0.120
180°C
0.128
30°
120°C
0.135
60°
60°C
0.153
120°
30°C
0.185
180°
DC
Constants for ZthJC calculation:
i
Rthi (K/W)
ti (s)
0.00
1
0.0058
0.00054
10-3
10-2
10-1
100
101
s
102
2
0.031
0.098
t
3
0.072
0.54
4
0.0112
12
0.25
Fig. 9 Transient thermal impedance
K/W
junction to heatsink (per diode)
0.20
ZthJK
0.15
0.10
0.05
RthJK for various conduction angles d:
d
RthJK (K/W)
DC
0.160
180°C
0.168
120°C
0.175
30°
60°C
0.193
60°
120°
30°C
0.225
180°
DC
Constants for ZthJK calculation:
i
Rthi (K/W)
ti (s)
0.00
1
0.0058
0.00054
10-3
10-2
10-1
100
101
s
102
2
0.031
0.098
t
3
0.072
0.54
4
0.0112
12
5
0.04
12
POWERSEM GmbH, Walpersdorfer Str. 53
 2003 POWERSEM reserves the right to change limits, test conditions and dimensions
D - 91126 Schwabach
Phone: 09122 - 9764 - 0 FAX: 09122 - 9764 - 20