Revised: 01/16/18

Specifications are subject to change without notice.

©2018 Littelfuse, Inc

Thyristors

20 / 25 Amp Standard SCRs

Sxx20x & Sxx25x Series

Dimensions — TO-220AB (R-Package) — Non-Isolated Mounting Tab Common with Center Lead

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.380

0.420

9.65

10.67

B

0.105

0.115

2.67

2.92

C

0.230

0.250

5.84

6.35

D

0.590

0.620

14.99

15.75

E

0.142

0.147

3.61

3.73

F

0.110

0.130

2.79

3.30

G

0.540

0.575

13.72

14.61

H

0.025

0.035

0.64

0.89

J

0.195

0.205

4.95

5.21

K

0.095

0.105

2.41

2.67

L

0.060

0.075

1.52

1.91

M

0.085

0.095

2.16

2.41

N

0.018

0.024

0.46

0.61

O

0.178

0.188

4.52

4.78

P

0.045

0.060

1.14

1.52

R

0.038

0.048

0.97

1.22

K

J

A

H

G

B

F

E

C

D

L

R

T

ANODE

O

P

N

M

.276

7.01

.526

13.36

.320

8.13

NOTCH IN

GATE LEAD

TO ID.

NON-ISOLATED

TAB

GATE

CATHODE ANODE

Dimensions — TO-220AB (L-Package) — Isolated Mounting Tab

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.380

0.420

9.65

10.67

B

0.105

0.115

2.67

2.92

C

0.230

0.250

5.84

6.35

D

0.590

0.620

14.99

15.75

E

0.142

0.147

3.61

3.73

F

0.110

0.130

2.79

3.30

G

0.540

0.575

13.72

14.61

H

0.025

0.035

0.64

0.89

J

0.195

0.205

4.95

5.21

K

0.095

0.105

2.41

2.67

L

0.060

0.075

1.52

1.91

M

0.085

0.095

2.16

2.41

N

0.018

0.024

0.46

0.61

O

0.178

0.188

4.52

4.78

P

0.045

0.060

1.14

1.52

R

0.038

0.048

0.97

1.22

A

H

G

B

F

E

C

D

L

R

T

O

P

N

M

.320

8.13

.526

13.36

.276

7.01

K

J

GATE

CATHODE ANODE

Note: Maximum torque to

be applied to mounting tab

is 8 in-lbs. (0.904 Nm).

Note: Maximum torque to

be applied to mounting tab

is 8 in-lbs. (0.904 Nm).

25 Amps High Junction Temperature SCRs

SJxx25xx Series