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Allegro MicroSystems A321 Series

8 variants · Allegro MicroSystems

About the Allegro MicroSystems Allegro MicroSystems A321 Series series

The Allegro MicroSystems Allegro MicroSystems A321 Series series groups 8 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common current - output of 1mA, current - supply of 2mA and function of Omnipolar Switch. Variants differ by case, mounting type and operating temperature, so you can match the exact case your application requires using the selection guide below.

Select a variant by

Case
3-SSIP · SOT-23W
Mounting type
Surface Mount · Through Hole
Operating temperature
-40°C ~ 85°C (TA) · -40°C ~ 150°C (TA) · -40°C~85°C(TA)
Package
Bulk · Tape & Reel (TR); Cut Tape (CT)
Sensing range
±5.5mT Trip, ±1mT Release · ±7mT Trip, ±1mT Release
Test condition
-40°C ~ 85°C · -40°C ~ 150°C
Voltage
2.4V ~ 5.5V · 2.5V ~ 3.5V

Variant comparison

ParameterA3213ELHLT-TA3213EUA-TA3213LUA-TA3211ELHLT-TA3214ELHLT-T
CaseSOT-23W3-SSIP3-SSIPSOT-23WSOT-23W
Mounting typeSurface MountThrough HoleThrough HoleSurface MountSurface Mount
Operating temperature-40°C~85°C(TA)-40°C ~ 85°C (TA)-40°C ~ 150°C (TA)-40°C ~ 85°C (TA)-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)BulkBulkTape & Reel (TR); Cut Tape (CT)Tape & Reel (TR); Cut Tape (CT)
Sensing range±7mT Trip, ±1mT Release±7mT Trip, ±1mT Release±7mT Trip, ±1mT Release±5.5mT Trip, ±1mT Release±7mT Trip, ±1mT Release
Test condition-40°C ~ 85°C-40°C ~ 85°C-40°C ~ 150°C-40°C ~ 85°C-40°C ~ 85°C
Voltage2.4V ~ 5.5V2.4V ~ 5.5V2.4V ~ 5.5V2.5V ~ 3.5V2.4V ~ 5.5V

Shared specifications

Current - output
1mA
Current - supply
2mA
Function
Omnipolar Switch
Output type
Open Drain
Polarization
North Pole, South Pole
Technology
Hall Effect

Request a quote on any Allegro MicroSystems A321 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the Allegro MicroSystems Allegro MicroSystems A321 Series variants differ?
Allegro MicroSystems A321 Series part numbers differ by case, mounting type, operating temperature and package. Use the selection guide above to pick by case.
How many Allegro MicroSystems Allegro MicroSystems A321 Series part numbers are listed?
8 Allegro MicroSystems Allegro MicroSystems A321 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Allegro MicroSystems Allegro MicroSystems A321 Series?
Request a quote (RFQ) for any Allegro MicroSystems A321 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.

All variants