ST303S Series

6

Bulletin I25173 rev. C 03/03

www.irf.com

Fig. 5 - Maximum Non-repetitive Surge Current

Fig. 6 - Maximum Non-repetitive Surge Current

3000

3500

4000

4500

5000

5500

6000

6500

7000

110

100

Numb er Of Eq ua l Amp litud e Half Cyc le Current Pulses (N)

Initial T = 125°C

@60 Hz 0.0083 s

@50 Hz 0.0100 s

J

ST303SSeries

At Any Rated Load Condition And With

Rated V

Applied Following Surge.

RRM

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

0.01

0.1

1

Pulse Train Duration (s)

Versus Pulse Train Duration. Control

Of Conduc tion May Not Be Maintained.

Initial T = 125°C

No Voltage Reapplied

Rated V

Reapplied

RRM

J

ST303SSeries

Maximum Non Repetitive Surge Current

Fig. 3 - On-state Power Loss Characteristics

Fig. 4 - On-state Power Loss Characteristics

25

50

75

100

125

Maximum Allowab le Ambient Temperature (°C)

0.3

K/ W

0.5 K/ W

0.2

K/ W

0.1

6 K

/ W

0.12

K/ W

0.0

6

K/

W

0.0

8

K/W

0

100

200

300

400

500

600

0

50

100

150

200

250

300

180°

120°

90°

60°

30°

RMSLimit

Cond uc tion Angle

Average On-state Current (A)

ST303SSeries

T = 125°C

J

25

50

75

100

125

Maximum Allowable Ambient Temperature (°C)

R

=

0.0

1

K/

W

- D

elt

a

R

th

SA

0.3 K/

W

0.5 K/W

0.2

K/ W

0.12

K/ W

0.0

6 K

/W

0.0

3

K/ W

0

100

200

300

400

500

600

700

800

900

0

50 100 150 200 250 300 350 400 450 500

DC

180°

120°

90°

60°

30°

RMSLimit

Cond uc tion Period

Average On-state Current (A)

ST303SSeries

T = 125°C

J