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AH3372-P-B

DIOAH3372-P-B

Diodes Incorporated
Digital Switch Unipolar Switch Open Drain Hall Effect 3-SIP
1,000 in stock
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Overview

The AH3372-P-B is a high-sensitivity unipolar Hall effect switch designed for proximity and position sensing. It operates across a wide 3V to 28V supply range and features a chopper-stabilized design to ensure stable magnetic parameters from -40C to 125C. The device provides a single open-drain output that activates when a south pole magnetic field exceeds the 3mT typical trip point.

Why Choose This Part

This sensor offers robust protection including a reverse blocking diode and Zener clamps on the supply and output pins. Its high 6kV HBM ESD rating and over-current limiting make it suitable for harsh electrical environments. The unipolar south-pole activation ensures precise triggering while the chopper-stabilized architecture minimizes threshold drift over the full temperature range.

Applications

Industrial Proximity Sensing
Non-contact detection of moving parts in automated assembly lines and pneumatic cylinders.
Level Monitoring
Used with floating magnets to detect liquid levels in tanks without physical contact with the fluid.
Limit Switching
Serves as an end-of-travel sensor for mechanical actuators in CNC machinery and robotics.
Door and Lid Detection
Reliable open/closed status sensing for industrial enclosures and consumer appliances.

Key Specifications

Function Unipolar Switch
Technology Hall Effect
Output Type Open Drain
Polarization South Pole
Mounting Type Through Hole
Sensing Range 3mT Trip, 2mT Release
Package / Case 3-SIP
Test Condition -40degC ~ 125degC
Voltage - Supply 3V ~ 28V
Operating Temperature -40degC ~ 125degC (TA)
Current - Output (Max) 55mA
Current - Supply (Max) 4mA
Supplier Device Package 3-SIP

Getting Started

To use this sensor, connect the supply pin to a 3V to 28V source and place a 10k ohm pull-up resistor on the open-drain output pin. Ensure the branded side of the SIP-3 package faces the south pole of the target magnet for correct activation. For prototyping, the through-hole SIP-3 package is compatible with standard 0.1-inch pitch breadboards and stripboards.

Also Consider

DRV5032 TITexas Instruments - An ultra-low power alternative for battery-operated devices requiring sub-microamp average current.
SS443A Honeywell - A high-performance unipolar switch with a fast response time for high-speed industrial RPM sensing.
AH3362Q DIODiodes Incorporated - An AEC-Q100 qualified version with higher magnetic sensitivity for automotive safety and cockpit applications.