271

Revised: November 1, 2010 05:04 PM

©2010 Littelfuse, Inc

Specifications are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

20 / 25 Amp Standard SCRs

Sxx20x & Sxx25x Series

Static Characteristics

Symbol

Test Conditions

Value

Unit

V

TM

20A Device I

MAX.

1.6

V

25A Device I

I

V

T

400 – 600V

MAX.

10

μA

800 – 1000V

20

T

400 – 600V

500

800V

1000

1000V

3000

T

400 – 600V

1000

800V

2000

Thermal Resistances

Symbol

Parameter

Value

Unit

R

θ(J-C)

Junction to case (AC)

Sxx25R /

Sxx25N

1.0

°C/W

Sxx20L

2.4

Sxx25L

2.35

R

θ(J-A)

Junction to ambient

Sxx25R

40

°C/W

Sxx20L

/ Sxx25L

50

Note: xx = voltage

Figure 1: Normalized DC Gate Trigger Current

vs. Junction Temperature

Figure 2: Normalized DC Gate Trigger Voltage

vs. Junction Temperature

125

0.0

0.5

1.0

1.5

2.0

-40

-1510356085110

Junction Temperature (T

125

0.0

0.5

1.0

1.5

2.0

-40

-1510356085110

Junction Temperature (T