DRD420D Datasheet, PDF (5/7 Pages) Dynex Semiconductor – Rectifier Diode

DRD420D
80
70
60
50
40
30
20
10
Surge current (V_R = 0)
Surge current (V_R = 50% V_RRM)
0
0
10
20
30
40
50
60
Number of cycles @ 50Hz
Fig.4 Series multi-cycle surge current
0.1
Conduction
d.c.
Halfwave
3 phase 120˚
6 phase 60˚
Effective thermal resistance
Junction to case ˚C/W
Double side
0.0130
0.0141
0.0170
0.0200
Anode side
0.0250
0.0261
0.0290
0.0320
Anode side cooled
0.01
Double side cooled
160
40
140
35
120
30
100
25
80
20
60
15
40
20
0
1
10
I_FSM (V_R = 0)
I_FSM (V_R = 50% V_RRM) ₅
I²t (V_R = 0)
I²t (V_R = 50% V_RRM)
0
2 3 4 5 6 7 8 9 10
Pulse length, half sine wave - (ms)
Fig.5 Sub-cycle surge curves
0.001
0.0001
0.001
0.01
0.1
1
Time - (s)
10
100
Fig.5 Maximum (limit) transient thermal impedance -
junction to case
5/7
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