Allegro Microsystems A1120EUA-T, Unipolar Hall Effect Sensor Switch, 3-Pin SIP

Enrgtech Part No: ET14088892
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Manufacturer Part No:
A1120EUA-T
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Manufacturer: Allegro Microsystems

A1120EUA-T Allegro Microsystems , Unipolar Hall Effect Sensor Switch, 3-Pin SIP

Product Information

Automotive Standard:

AEC-Q100

Maximum Operating Temperature:

85°C

Magnetic Type:

Unipolar

Maximum Frequency Response:

800kHz

Sensor Type:

Hall Effect Sensors

Maximum Supply Voltage:

24V

Series:

A1120

Supply Current:

4mA

Height:

3.02mm

Width:

1.52 mm

Length:

4.09mm

Package Type:

SIP

Checking for live stock

The Allegro MicroSystems A1120EUA‑T is a chopper‑stabilised precision Hall‑effect unipolar switch housed in a 3‑pin SIP package. It offers reliable magnetic sensing with a typical operating point of 35 G and a release point of 25 G, operating from a 3 V to 24 V supply and qualified to automotive standards (AEC‑Q100). It integrates a voltage regulator, Hall‑voltage generator, amplifier, and Schmitt trigger to deliver a stable output even under high-temperature and mechanical-stress conditions.

Standout Features and Benefits of Choosing the Allegro Microsystems Unipolar Hall Effect Sensor Switch

Unipolar switch design responds to a south‑pole magnetic field for the on‑state.
Supply voltage range from 3 V to 24 V supports low‑voltage and standard systems.
Output is open‑drain and sinks up to 25 mA for flexible interface integration.
Chopper‑stabilised architecture ensures temperature and stress stability up to 150 °C.
Through‑hole 3‑pin SIP package allows simple PCB mounting and robust mechanical connection.
Automotive qualification (AEC‑Q100) and reverse‑battery protection make it suitable for harsh environments.

Engineered for Precision and Stability

The A1120EUA‑T is engineered to deliver consistent magnetic switching behaviour in demanding conditions, including high temperatures and mechanical stress. The open‑drain output allows easy interfacing with digital logic or microcontroller input stages, while the wide supply voltage range makes it adaptable in legacy and modern systems.

Versatile Uses of the Product

Position sensing in industrial automation and motor control systems.
Magnetic gear tooth or target sensing in automotive or robotics applications.
Security and access control devices require reliable magnetic switching.
Embedded electronics and instrumentation where space is limited but performance required.
Replacement or upgrade of older through‑hole Hall‑effect switches in legacy PCBs.

A1120, A1121, A1122, and A1125 Chopper Stabilized Precision Hall Effect Switches Data Sheet(Technical Reference)

A1YY/A3YY 24/Aug/2016(PCN Design/Specification)

Tape Change 27/Jan/2023(PCN Packaging)

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