Chopper-Stabilized, Two-Wire

Hall-Effect Switches

A1150, A1152, A1153, A1155,

A1156, A1157, and A1158

11

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Figure 4: Package LH, 3-Pin SOT23W

A

B

C

D

C

For Reference Only – Not for Tooling Use

(Reference DWG-2840)

Dimensions in millimeters– NOTTO SCALE

Dimensions exclusive of mold flash, gate burrs, and dambar protrusions

Exact case and lead configuration at supplier discretion within limits shown

Reference land pattern layout; all pads a minimum of 0.20 mm from all adjacent pads;

adjust as necessary to meet application process requirements and PCB layout tolerances

Active Area Depth, 0.28 mm

Hall elements, not to scale

= Last three digits of device part number

N

Standard Branding Reference View

NNN

Branding scale and appearance at supplier discretion

Seating Plane

Gauge Plane

PCB Layout Reference View

0.55 REF

0.25 BSC

0.95 BSC

0.95

1.00

0.70

2.40

2

1

B

A

Branded Face

2.90

+0.10

–0.20

4° ±4°

8X 10°

REF

0.180

+0.020

–0.053

0.05

+0.10

–0.05

0.25 MIN

1.91

+0.19

–0.06

2.98 +0.12

–0.08

1.00 ±0.13

0.40 ±0.10

D

D

D

1.49

0.96

3

PACKAGE OUTLINE DRAWINGS