A3144LUA-T Hall Effect Sensor (A3144 Hall Sensor Switch)
The A3144LUA-T Hall Effect Sensor is a digital magnetic sensor designed to detect the presence of a magnetic field and provide a switching output. It operates as a unipolar Hall effect switch, meaning the output changes state when a magnetic field of sufficient strength is applied.
It is widely used in electronics for contactless detection because it can sense magnetic fields without physical contact. Hall sensors generate a voltage when exposed to a magnetic field perpendicular to current flow, which is then processed internally to produce a digital output.
Key Features
- Digital Hall Effect Sensor magnetic switch output
- Unipolar Operation responds to one magnetic polarity
- Open Collector Output requires pull up resistor
- High Reliability no mechanical wear
- Fast Response suitable for switching applications
- Compact TO92 package easy PCB mounting
Specifications
- Sensor Type: Digital Hall effect switch
- Output Type: Digital open collector
- Supply Voltage: approx 4.5V to 24V
- Output Current: up to 25mA
- Output Voltage: up to 28V
- Operating Temperature: -40 to 85 degree C typical
- Package Type: TO92
- Mounting Type: Through hole
Applications
- Magnetic proximity detection
- Speed sensing and RPM measurement
- Position sensing and limit switches
- Door and cover detection
- Motor control and automation
Pinout Configuration
Working Principle
- Magnetic field applied to sensor
- Internal Hall element generates voltage
- Comparator switches output transistor
- Output goes low when magnet detected
