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SS494B

SS494B

Honeywell Sensing and Productivity Solutions
Hall Effect Sensor Single Axis
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Overview

The SS494B is a high-performance linear Hall-effect sensor that provides a ratiometric analog voltage output proportional to magnetic field strength. It features a quad-Hall integrated circuit design to minimize mechanical stress effects and includes temperature-compensated magnetics for consistent performance over a wide -40 to 150 Celsius operating range.

Why Choose This Part

This sensor offers rail-to-rail operation, allowing for a more usable signal and higher accuracy in 5V systems. Its temperature-compensated design and low drift ensure stable measurements across a broad thermal envelope, while the thin 3-SIP package facilitates easy integration into space-constrained mechanical assemblies.

Applications

Current Sensing
Used in non-contact current monitoring applications where the sensor detects the magnetic field generated by a conductor.
Brushless DC Motor Control
Provides precise rotor position feedback for commutation and speed control in industrial motors.
Magnetic Displacement Sensing
Ideal for measuring linear or angular travel in valve actuators, pedal positions, or robotic joints.
Liquid Level Sensing
Detects the position of a floating magnet to provide continuous level measurement in fluid tanks.

Key Specifications

Axis Single
Features Temperature Compensated
Technology Hall Effect
Output Type Analog Voltage
Mounting Type Through Hole
Sensing Range +/-42mT
Package / Case 3-SIP
Voltage - Supply 4.5V ~ 10.5V
Operating Temperature -40degC ~ 150degC
Current - Output (Max) 1.5mA (Typ)
Current - Supply (Max) 8.7mA

Getting Started

Connect the supply pin to a regulated 4.5V to 10.5V DC source and monitor the output with a microcontroller ADC. For best results, use a 0.1 microfarad ceramic bypass capacitor close to the sensor supply pins and ensure the magnet is oriented to provide a field within the +/-400 Gauss linear range.

Also Consider

SS495A Honeywell - A higher-accuracy version within the same family offering tighter sensitivity tolerances and lower null offset drift.