Sidactor, Protection thyristors, High surge current protection – Littelfuse 5kA Series TO-218 User Manual

Page 2: 25°c

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SIDACtor

®

Protection Thyristors

189

Revised: February 22, 2011

© 2011 Littelfuse, Inc.
Specifications are subject to change without notice.

Please refer to www.littelfuse.com for current information.

High Surge Current Protection

Surge Ratings

Series

I

PP

I

TSM

50 / 60 Hz

di/dt

8x20

1

1.2x50

2

A min

A min

A/μs max

E

5000

400

630

Package

Symbol

Parameter

Value

Unit

TO-218

T

Operating Junction Temperature Range

UP 

°C

T

S

Storage Temperature Range

UP 

°C

T

C

Maximum Case Temperature

100

°C

R

0JC

*

Thermal Resistance: Junction to Case

1.7

°C/W

R

0JA

Thermal Resistance: Junction to Ambient

56

°C/W

Thermal Conditions

1

2

3

2

(No
Connection)

*R

0JC

rating assumes the use of a heat sink and on state mode for extended time at 25 A, with average power dissipation of 29.125 W.

I

H

I

T

I

S

I

DRM

V

DRM

V

T

+V

-V

+I

-I

V

S

50

100

0

t

r

t

d

0

Peak
Value

Half Value

t – Time (μs)

I

PP

– P

eak Pulse Current – %I

PP

t

r

= rise time to peak value

t

d

= decay time to half value

Waveform = t

r

x t

d

V-I Characteristics

t

r

x t

d

Pulse Waveform

Notes:

1 Current waveform in μs
2 Voltage waveform in μs

- Peak pulse current rating (I

PP

) is repetitive and guaranteed for the life of the product.

- I

PP

SBUJOHTBQQMJDBCMFPWFSUFNQFSBUVSFSBOHFPG$UP $

- The device must initially be in thermal equilibrium with -40°C < T

J

< ¡$

25°C

Case Temperature (T

C

) - ºC

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

-40

-20

0

20

40

60

80

100 120 140 160

R

atio of

I

H

I

H

(T

C

= 2

5

ºC)

Normalized V

S

Change vs. Junction Temperature

Normalized DC Holding Current vs. Case Temperature

-8

-40 -20

0

20 40 60 80 100 120 140 160

-6

-4

0

2

4

6

8

10

12

14

Junction Temperature (T

J

) – °C

P

ercent of

V

S

Change – %

25 °C

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