A1120LLHLT-T - Digital Switch Unipolar Open Drain Hall Effect Sensor SOT-23-3

Allegro MicroSystems

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SKU:
005-A1120LLHLT-T
MPN:
A1120LLHLT-T
A1120LLHLT-T unipolar Hall effect magnetic sensor with open drain output in SOT-23-3 package
Quantity
Unit Price (ex. GST)
1 - 9
₹ 95.55
10 - 99
₹ 86.00
100 or above
₹ 76.44
A1120LLHLT-T unipolar Hall effect magnetic sensor with open drain digital output in compact SOT-23-3 package for contactless switching and embedded-system applications. View full description
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Technical Specifications

Brand:
Allegro MicroSystems
Case/Package:
SOT-23
Mount:
Surface Mount
Number Of Pins:
3
Number of Terminals:
3
Bandwidth:
800 kHz
Current Rating:
4 mA
Max Operating Temperature:
150 C
Max Output Current:
60 mA
Max Supply Current:
4 mA
Max Supply Voltage:
24 V
Min Operating Temperature:
-40 C
Min Supply Voltage:
3 V
Output Current:
25 mA
Sensor Type:
1D Planar
Type:
Unipolar Switch
Height:
1 mm
Length:
2.98 mm

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:
Datasheet

Compact Unipolar Hall Effect Magnetic Switch Sensor With Open Drain Output In SOT-23-3 Package

The A1120LLHLT-T Digital Switch Unipolar Open Drain Hall Effect Sensor is a compact magnetic sensing device designed for reliable contactless switching and magnetic field detection applications. Built using Hall effect sensing technology, this unipolar magnetic sensor detects the presence of a specific magnetic polarity and provides a stable digital output for embedded systems, industrial automation, consumer electronics, and motion-control applications. Its miniature SOT-23-3 package makes it suitable for compact PCB designs and space-constrained electronic products.

Featuring an open-drain digital output, the A1120LLHLT-T supports easy interfacing with microcontrollers, logic circuits, and embedded processors. The sensor operates without physical contact, reducing mechanical wear and improving long-term reliability compared to traditional mechanical switches. It is commonly used in position sensing, lid detection, speed sensing, brushless motor systems, and smart electronic devices requiring low-power magnetic switching functionality.

Key Features

  • Unipolar Hall Effect Sensing: Detects a specific magnetic polarity for accurate switching operation.
  • Open Drain Output: Flexible digital output interface compatible with multiple logic voltage systems.
  • Compact SOT-23-3 Package: Small surface-mount package suitable for high-density PCB layouts.
  • Digital Magnetic Switching: Stable ON OFF digital output for embedded-system applications.
  • Contactless Detection: Eliminates mechanical wear and improves operational reliability.
  • Low Power Consumption: Suitable for portable and battery-powered electronics.
  • Fast Switching Response: Supports high-speed magnetic detection applications.
  • Reliable Magnetic Sensing: Stable operation in industrial and consumer electronics environments.
  • Easy Embedded Integration: Compatible with microcontrollers, automation systems, and IoT devices.

Applications

  • Magnetic position sensing
  • Door and lid detection
  • Brushless DC motor systems
  • Speed detection applications
  • Consumer electronics
  • Smart-home devices
  • Industrial automation
  • Embedded-system development
  • Contactless switches
  • Portable electronic devices

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