© 2016 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 04/30/16

25 Amp Standard & Alternistor (High Commutation) Triacs

Dimensions — TO-218AC (K Package) — Isolated Mounting Tab

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.810

0.835

20.57

21.21

B

0.610

0.630

15.49

16.00

C

0.178

0.188

4.52

4.78

D

0.055

0.070

1.40

1.78

E

0.487

0.497

12.37

12.62

F

0.635

0.655

16.13

16.64

G

0.022

0.029

0.56

0.74

H

0.075

0.095

1.91

2.41

J

0.575

0.625

14.61

15.88

K

0.211

0.219

5.36

5.56

L

0.422

0.437

10.72

11.10

M

0.058

0.068

1.47

1.73

N

0.045

0.055

1.14

1.40

P

0.095

0.115

2.41

2.92

Q

0.008

0.016

0.20

0.41

R

0.008

0.016

0.20

0.41

U

0.164

0.165

4.10

4.20

W

0.085

0.095

2.17

2.42

G

B

A

W

F

D

V

S

MT1

MT2

T

C

E

K

H

J

U

.320

8.13

.276

7.01

.331

8.41

GATE

.460

11.68

.665

16.89

.260

6.60

.150

3.81

.080

2.03

.085

2.16

.055

1.40

.350

8.89

.276

7.01

.276

7.01

Dimension

Inches

Millimeters

Min

Max

Min

Max

A

0.360

0.370

9.14

9.40

B

0.380

0.420

9.65

10.67

C

0.178

0.188

4.52

4.78

D

0.025

0.035

0.64

0.89

E

0.045

0.060

1.14

1.52

F

0.060

0.075

1.52

1.91

G

0.095

0.105

2.41

2.67

H

0.092

0.102

2.34

2.59

J

0.018

0.024

0.46

0.61

K

0.090

0.110

2.29

2.79

S

0.590

0.625

14.99

15.88

V

0.035

0.045

0.89

1.14

U

0.002

0.010

0.05

0.25

W

0.040

0.070

1.02

1.78

C

D

H

G

F

B

A

E

P

Gate

J

MT2

MT1

M

N

K

L

R

Q

W

Note: Maximum torque to

be applied to mounting tab

is 8 in-lbs. (0.904 Nm).