Data Sheets

Sensitive SCRs

©2004 Littelfuse, Inc.

E5 - 9

http://www.littelfuse.com

Thyristor Product Catalog

+1 972-580-7777

Figure E5.14 Peak Surge On-state Current versus Surge Current Duration

Figure E5.15 Typical Turn-on Time versus Gate Trigger Current

Figure E5.16 Power Dissipation (Typical) versus RMS On-state Current

1

2

3

4

5 6

8 10

20

30 40 50 60 80 100

200

300 400

600

1000

1

2

3

4

5

6

8

10

20

30

40

50

60

80

100

200

SUPPLY FREQUENCY: 60 Hz Sinusoidal

LOAD: Resistive

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

Rated Value at Specified Case Temperature

Surge Current Duration – Full Cycles

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.

6 A Devices

8 A Devices

10 A Devices

4 A TO-251 and TO-252

1.5 A Devices

TO-106

and TO-107

0.8 A TO-92

and Compak

0.01

0.1

1

10

100

0.1

1.0

10

100

µA MAX

µA MAX

µA MAX

µA MAX

01234

1.0

2.0

3.0

4.0

5.0

T106 and T107

0.8 A TO-92 and Compak

1.5 A Devices

CURRENT WAVEFORM: Half Sine Wave

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180˚

4 A TO-251 and TO-252