DS502ST Datasheet, PDF (5/7 Pages) Dynex Semiconductor – Rectifier Diode

DS502ST
12
250
I²t = β x t
2
10
8
200
6
4 _I²_t
150
2
0
100
1
10 1 2 3 5 10 20 50
ms
Cycles at 50Hz
Duration
Fig.4 Surge (non-repetitive) forward current vs time
(with 50% V_RRM at T_case 175˚C)
1.0
0.1
0.01
0.001
0.001
Anode side cooled
Double side cooled
Conduction Effective thermal resistance
Junction to case ˚C/W
d.c.
Halfwave
3 phase 120˚
6 phase 60˚
Double side
0.070
0.080
0.105
0.1425
Single side
0.140
0.150
0.175
0.2125
0.01
0.1
1
10
Time - (s)
Fig.5 Maximum (limit) transient thermal impedance -
junction to case
5/7
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