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SS411A

SS411A

Honeywell Sensing and Productivity Solutions
Digital Switch Bipolar Switch Open Collector Hall Effect Radial Lead
Active15,419 in stock

Overview

The SS411A is a high-performance bipolar digital Hall-effect sensor designed for speed, position, and motor commutation applications. It features temperature-compensated magnetics and a quad Hall IC design that minimizes mechanical stress, ensuring stable operation across a wide supply voltage range of 3.8V to 30V.

Why Choose This Part

The bipolar magnetics respond to alternating North and South poles, providing a typical 6mT trip and -6mT release point for precise switching. Its open-collector output simplifies interfacing with various logic levels, while the temperature compensation maintains accuracy across extreme environments from -40C to 150C.

Applications

Brushless DC Motor Commutation
Used to detect rotor position for efficient electronic commutation in BLDC motors and cooling fans.
Flow-Rate Sensing
Integrates into liquid flow meters to track impeller rotation and calculate volume or velocity.
Tachometers and Counters
Acts as a reliable pickup for measuring RPM or counting machine cycles in industrial equipment.
Automotive Position Sensing
Reliable for electric window lifts and convertible roof positioning due to its wide operating temperature range up to 150C.

Key Specifications

Features Temperature Compensated
Function Bipolar Switch
Technology Hall Effect
Output Type Open Collector
Polarization North Pole, South Pole
Mounting Type Through Hole
Sensing Range 6mT Trip, -6mT Release
Package / Case TO-226-3, TO-92-3 (TO-226AA)
Test Condition 25degC
Voltage - Supply 3.8V ~ 30V
Operating Temperature -40degC ~ 150degC (TA)
Current - Output (Max) 20mA
Current - Supply (Max) 10mA
Supplier Device Package Radial Lead

Getting Started

Connect a pull-up resistor (typically 1k to 10k ohms) between the open-collector output pin and your logic voltage to interface with a microcontroller. Use a ceramic decoupling capacitor near the sensor's supply pins to filter noise in high-power motor environments.

Also Consider

DRV5032 TITexas Instruments - Lower power alternative for battery-operated applications requiring a digital Hall-effect switch.