Alternistor Triacs

Data Sheets

http://www.littelfuse.com

E4 - 8

©2004 Littelfuse, Inc.

+1 972-580-7777

Thyristor Product Catalog

Figure E4.7 Normalized DC Gate Trigger Voltage for all Quadrants

versus Case Temperature

Figure E4.8 Normalized DC Gate Trigger Current for all Quadrants

versus Case Temperature

Figure E4.9 Normalized DC Holding Current versus Case Temperature

Figure E4.10 Peak Surge Current versus Surge Current Duration

(6 A to 12 A)

Figure E4.11 Peak Surge Current versus Surge Current Duration

(16 A to 40 A)

Figure E4.12 Turn-on Time versus Gate Trigger Current (Typical)

0

.5

1.0

1.5

2.0

-65

-15

+65

+25

+125

-40

Case Temperature (T

0

1.0

2.0

3.0

4.0

-65

-15

+65

+25

+125

-40

Case Temperature (T

0

1.0

2.0

3.0

4.0

-65

-15

+65

+25

+125

-40

Case Temperature (T

INITIAL ON-STATE CURRENT

= 400 mA dc 16 A to 40 A Devices

= 100 mA dc 6 to 12A Devices

200

120

40

1

2

3 45 6

8 10

20

30 40

60 80 100

200

300

600

1000

80

60

50

100

8

6

5

10

30

20

4

1

3

2

Surge Current Duration – Full Cycles

SUPPLY FREQUENCY: 60 Hz Sinusoidal

LOAD: Resistive

RMS ON-STATE CURRENT [IT(RMS)]: Maximum

Rated Value at Specified Case Temperature

Notes:

1) Gate control may be lost during and

immediately following surge current

interval

2) Overload may not be repeated until

junction temperature has returned

to steady state rated value.

10 A to 12 A Devices

8 A TO-251

and TO-252

8 A Devices

6 A Devices

6 A TO-251

and TO-252

110

100

1000

10

20

30

40

50

60

80

100

250

300

400

1000

Surge Current Duration – Full Cycles

200

Notes:

1) Gate control may be lost during and

immediately following surge current

interval.

2) Overload may not be repeated until

junction temperature has returned to

steady-state rated value.

SUPPLY FREQUENCY: 60Hz Sinusoidal

LOAD: Resistive

Rated Value at Specified Case Temperature

40 A Devices

35 A Devices

30 A Devices

25 A Devices

16 A Devices

0

100

200

300

400

500

0

2

4

6

8

10