Sensitive Two-Wire Field-Programmable

Chopper-Stabilized Unipolar Hall Effect Switches

A1180, A1181,

15

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889;

5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending.

Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to

permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that

the information being relied upon is current.

Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval.

The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its

use; nor for any infringement of patents or other rights of third parties which may result from its use.

Copyright © 2004, 2006 Allegro MicroSystems, Inc.

Package UA, 3-Pin SIP

B

D

D

D

.164

.159

4.17

4.04

.122

.117

3.10

2.97

.062

.058

1.57

1.47

.017

.014

0.44

0.35

.019

.014

0.48

0.36

.640

.600

16.26

15.24

.085

MAX

2.16

.050

NOM

1.27

.031

REF

0.79

.0805

NOM

2.04

1.44

.0565

NOM

Dimensions in inches

Metric dimensions (mm) in brackets, for reference only

23

1

A

A

B

C

C

Dambar removal protrusion (6X)

Active Area Depth .0195 [0.50] NOM

Ejector mark on opposite side