Sensitive Two-Wire Chopper-Stabilized

Unipolar Hall Effect Switches

A1140, A1141,

A1142, and A1143

3

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Part Number

Package

Operating Ambient

(°C)

Output Level in

Supply Current at

(mA)

Yes

Tape and Reel, 2000 pieces/reel

Through Hole

–40 to 85

Low

2 to 5

Yes

Tape and Reel, 2000 pieces/reel

Through Hole

–40 to 150

Yes

Tape and Reel, 2000 pieces/reel

Through Hole

–40 to 85

High

Yes

Tape and Reel, 2000 pieces/reel

Through Hole

–40 to 150

A1142ELHLT-T

Yes

Tape and Reel, 3000 pieces/reel

Surface Mount

–40 to 85

Low

5 to 6.9

A1142EUA-T

Yes

Bulk Bag, 500 pieces/bag

Through Hole

Yes

Tape and Reel, 2000 pieces/reel

A1142LLHLT-T

Yes

Tape and Reel, 3000 pieces/reel

Surface Mount

–40 to 150

A1142LUA-T

Yes

Bulk Bag, 500 pieces/bag

Through Hole

Yes

Tape and Reel, 2000 pieces/reel

A1143ELHLT-T

Yes

Tape and Reel, 3000 pieces/reel

Surface Mount

–40 to 85

High

A1143EUA-T

Yes

Bulk Bag, 500 pieces/bag

Through Hole

Yes

Tape and Reel, 2000 pieces/reel

A1143LLHLT-T

Yes

Tape and Reel, 3000 pieces/reel

Surface Mount

–40 to 150

A1143LUA-T

Yes

Bulk Bag, 500 pieces/bag

Through Hole

Yes

Tape and Reel, 2000 pieces/reel

(a) Certain variants cited in this footnote are in production but have been determined to be NOT FOR NEW DESIGN. This classification indicates that

sale of this device is currently restricted to existing customer applications. The device should not be purchased for new design applications because

obsolescence in the near future is probable. Samples are no longer available. Status change: May 1, 2006. These variants include A1140EUATI,

A1140LUATI, A1140LUATI, A1141EUA, A1141EUATI, A1141LLHLT, A1141LUA, A1141LUATI, A1142EUATI, A1142LUATI,A1142LLHLT, A1142LUA,

A1143EUATI, A1143LUA , and A1143LUATI.

(b) Certain variants cited in this footnote are in production but have been determined to be LAST TIME BUY. This classification indicates that the

product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device should not be

purchased for new design applications because of obsolescence in the near future. Samples are no longer available. Status date change October 31,

2006. Deadline for receipt of LAST TIME BUY orders is April 27, 2007. These variants include: A1142ELHLT, A1142EUA, A1143ELHLT, A1143EUA, and

A1143LLHLT.

field application engineer for more information on availability. These variants include: A1140ELHLT-T, A1140EUA-T, A1140LLHLT-T, A1140LUA-T,

A1141ELHLT-T, A1141EUA-T, A1141LLHLT-T, and A1141LUA-T.

Product Selection Guide