DS502ST12 查看數據表（PDF） - Dynex Semiconductor

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DS502ST12

Rectifier Diode

Dynex Semiconductor 

DS502ST

12

250

I2t = Î2 x t

2

10

8

200

6

4 I2t

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% VRRM at Tcase 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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