Field-Programmable, Chopper-Stabilized,
Unipolar Hall-Effect Switches
A3250 and
A3251
Package UA, 3-Pin SIP
.164 4.17
.159 4.04
C
D
2.06 .081
NOM
.062 1.57
.058 1.47
D
1.45
D
.057
NOM
.122 3.10
.117 2.97
B
.085 2.16
MAX
.031 0.79
REF
.640 16.26
.600 15.24
A
.017 0.44
.014 0.35
1
2
3
.019 0.48
.014 0.36
.050 1.27
NOM
Dimensions in inches
Metric dimensions (mm) in brackets, for reference only
A
Dambar removal protrusion (6X)
Ejector mark on opposite side
B
C
D
Active Area Depth .0195 [0.50] NOM
Hall element (not to scale) controlling dimensions inches
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.
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
15
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com