Document Number: 94367

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Revision: 29-Apr-08

5

ST173SPbF Series

Inverter Grade Thyristors

(Stud Version), 175 A

Vishay High Power Products

Fig. 5 - Maximum Non-Repetitive Surge Current

Fig. 6 - Maximum Non-Repetitive Surge Current

Fig. 7 - On-State Voltage Drop Characteristics

Fig. 9 - Reverse Recovered Current Characteristics

Fig. 10 - Reverse Recovery Current Characteristics

2000

1

10

100

2500

3000

3500

4000

4500

Number of Equal Amplitude Half Cycle

Current Pulses (N)

Initial T

at 60 Hz 0.0083 s

at 50 Hz 0.0100 s

ST173S Series

At any rated load condition and with

rated V

1500

0.01

0.1

1

2000

2500

3000

3500

4000

5000

Pulse Train Duration (s)

Initial T

No voltage reapplied

Rated V

ST173S Series

4500

Maximum non-repetitive surge current

versus pulse train duration. Control

of conduction may not be maintained.

100

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

1000

10 000

T

T

Instantaneous On-State Voltage (V)

ST173S Series

0.01

0.01

0.1

1

10

0.001

0.1

1

Square Wave Pulse Duration (s)

ST173S Series

0.001

Steady state value

R

(DC operation)

0

20

0

406080

100

50

100

150

200

250

ST173S Series

T

dI/dt - Rate of Fall of On-State Current (A/µs)

= 500

A

= 300

A

= 200

A

100 A

I

0

20

40

60

80

100

120

dI/dt - Rate of Fall of On-State Current (A/µs)

ST173S Series

T

20

0

40

60

80

100

140

160

I

TM

= 500 A

I

TM

= 300 A

I

TM

= 200 A

I

TM

= 100 A

I

TM

= 50 A