12

FN6154.4

February 11, 2008

ISL28156, ISL28256

Small Outline Package Family (SO)

GAUGE

PLANE

A2

A1

L

L1

DETAIL X

4° ±4°

SEATING

PLANE

e

H

b

C

0.010

B

M

CA

0.004 C

0.010

B

M

CA

B

D

(N/2)

1

E1

E

N

N

(N/2)+1

A

PIN #1

I.D. MARK

h X 45°

A

SEE DETAIL “X”

c

0.010

MDP0027

SMALL OUTLINE PACKAGE FAMILY (SO)

SYMBOL

INCHES

TOLERANCE

NOTES

SO-8

SO-14

SO16

(0.150”)

SO16 (0.300”)

(SOL-16)

SO20

(SOL-20)

SO24

(SOL-24)

SO28

(SOL-28)

A

0.068

0.068

0.068

0.104

0.104

0.104

0.104

MAX

-

A1

0.006

0.006

0.006

0.007

0.007

0.007

0.007

±0.003

-

A2

0.057

0.057

0.057

0.092

0.092

0.092

0.092

±0.002

-

b

0.017

0.017

0.017

0.017

0.017

0.017

0.017

±0.003

-

c

0.009

0.009

0.009

0.011

0.011

0.011

0.011

±0.001

-

D

0.193

0.341

0.390

0.406

0.504

0.606

0.704

±0.004

1, 3

E

0.236

0.236

0.236

0.406

0.406

0.406

0.406

±0.008

-

E1

0.154

0.154

0.154

0.295

0.295

0.295

0.295

±0.004

2, 3

e

0.050

0.050

0.050

0.050

0.050

0.050

0.050

Basic

-

L

0.025

0.025

0.025

0.030

0.030

0.030

0.030

±0.009

-

L1

0.041

0.041

0.041

0.056

0.056

0.056

0.056

Basic

-

h

0.013

0.013

0.013

0.020

0.020

0.020

0.020

Reference

-

N

8

14

16

16

20

24

28

Reference

-

Rev. M 2/07

NOTES:

1. Plastic or metal protrusions of 0.006” maximum per side are not included.

2. Plastic interlead protrusions of 0.010” maximum per side are not included.

3. Dimensions “D” and “E1” are measured at Datum Plane “H”.

4. Dimensioning and tolerancing per ASME Y14.5M-1994