Data Sheets

SCRs

©2004 Littelfuse, Inc.

E6 - 7

http://www.littelfuse.com

Thyristor Product Catalog

+1 972-580-7777

Figure E6.1 Maximum Allowable Ambient Temperature versus

RMS On-state Current

Figure E6.2 Maximum Allowable Ambient Temperature versus

Average On-state Current

Figure E6.3 Peak Capacitor Discharge Current (6 A through 55 A)

Figure E6.4 Peak Capacitor Discharge Current Derating

(6 A through 55 A)

Figure E6.5 Maximum Allowable Case Temperature versus

RMS On-state Current (1 A)

Figure E6.6 Maximum Allowable Case Temperature versus

RMS On-state Current (6 A, 8 A, and 10 A)

20

40

60

80

100

120

0

0.2

0.4

0.6 0.8

1.0

1.2 1.4

1.6

1.8

2.0 2.2

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180˚

FREE AIR RATING

8 A TO-220 (Non-isolated)

6 A TO-220 (Isolated) and

6 A TO-202 (Types 1 and 3)

1 A TO-92

6 A TO-202

(Types 2 and 4)

and 6 A TO-251

20

40

60

80

100

120

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

8 A TO-220 (Non-isolated)

6 A TO-220 (Isolated) and

6 A TO-202 (Types 1 and 3)

1 A TO-92

6 A TO-202

(Types 2 and 4)

and 6 A TO-251

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180˚

FREE AIR RATING

0.5

1.0

2.0

5.0

10

20

50

20

50

100

200

300

1000

6 A to 10 A Devices

12 A Devices

25 A Devices

55 A Devices

15 A and 16 A

Devices

25

50

75

100

125

0

0.2

0.4

0.6

0.8

1.0

50

60

70

80

90

100

110

120

130

0

0.4

0.8

1.2

0.6

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180˚

CASE TEMPERATURE: Measure as

shown on dimensional drawing

1.0

0.2

1 A Devices

02

46

8

10

12

50

60

70

80

90

100

110

120

130

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180º

CASE TEMPERATURE: Measure as

shown on dimensional drawings

8 A TO-220 (Isolated)

and 8 A TO-202

6 A Devices

8 A TO-220 (Non-isolated)

TO-251 and TO-252

10 A TO-220 (Isolated)

and 10 A TO-202