Alpha Semiconductor Inc. 1031 Serpentine Lane. Pleasanton, CA 94568 Tel: (925) 417-1391 Fax: (925) 417-1390

Rev. 9/14/99

AS1117

PACKAGE DRAWING

TO-252-3L (R)

4

3

2

1

E

b

2

-A-

L

2

D

L

3

L

1

b

1

e

-C-

e1

D

1

E

1

BACK VIEW A-A

TERM 4

C

.010

M

A M

3 PLCS

-B-

A

A

1

C

1

c

8

A

A

SEATING

PLANE

H

L

5. D1 & E1 Establishes A Minimum Mounting Surface for Terminal 4.

NOTES

1. Refer To Applicable Symbol List.

2. Dimensions And Tolerancing Per Ansi Y14.5m - 1982.

3. Lead Dimension Uncontrolled in L

4. Tab Contour Optional Within Dim. b

6. L is the Termal Length for Soldering.

7. Controlling Dimension: Inch

8. 2 Mils Suggested For Postive Contact At Mounting.

b

MIN

MAX

MIN

MAX

A

0.086

0.094

2.184

2.3876

A1

0.035

0.045

0.889

1.143

b

0.025

0.035

0.635

0.889

b1

0.300

0.045

7.620

1.143

b2

0.205

0.215

5.207

5.461

4

c

0.018

0.023

0.457

0.5842

c1

0.018

0.023

0.457

0.5842

D

0.235

0.245

5.969

6.223

D1

0.170

-

4.318

-

4,5

E

0.250

0.265

6.350

6.731

E1

0.170

-

4.318

-

4,5

e

e1

H

0.370

0.410

9.398

10.414

L

0.020

-

0.508

-

6

L1

0.025

0.040

0.635

1.016

L2

0.035

0.050

0.889

1.270

4

L3

0.045

0.060

1.143

1.524

3

4.572

S

Y

M

B

O

L

0.098

MM

2.489

0.180

N

O

T

E

INCHES