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HAL1503SU-A

HAL1503SU-A

TDK-Micronas GmbH
Digital Switch Unipolar Switch Open Drain Hall Effect SOT-23-3
Active106,978 in stock
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Overview

The HAL1503SU-A is a unipolar Hall-effect switch designed for proximity sensing applications requiring a digital open-drain output. It operates across a wide supply voltage range of 2.7V to 24V and is optimized for detecting the South Pole of a magnetic field with a 5.5mT typical trip point.

Why Choose This Part

This sensor offers high reliability with an integrated open-drain output that simplifies interfacing with microcontrollers via a single pull-up resistor. Its wide operating voltage up to 24V makes it compatible with both logic-level circuits and standard industrial power rails.

Applications

End-of-Travel Sensing
Detecting the limit position of moving mechanical components in industrial machinery.
Brushless DC Motor Commutation
Providing rotor position feedback for timing in small motor control circuits.
Liquid Level Sensing
Used in conjunction with a floating magnet to detect high or low fluid levels in tanks.
Security Interlocks
Monitoring the open/closed status of doors or protective covers on electronic enclosures.

Key Specifications

Function Unipolar Switch
Technology Hall Effect
Output Type Open Drain
Polarization South Pole
Mounting Type Surface Mount
Sensing Range 5.5mT Trip, 3.7mT Release
Package / Case TO-236-3, SC-59, SOT-23-3
Voltage - Supply 2.7V ~ 24V
Operating Temperature -40degC ~ 70degC (TJ)
Supplier Device Package SOT-23-3

Getting Started

To integrate this sensor, connect the supply pin to a regulated source between 2.7V and 24V and place a 10k ohm pull-up resistor between the open-drain output and your target logic voltage. Ensure the magnet's South Pole faces the branded side of the SOT-23-3 package to trigger the 5.5mT switching threshold.