A3144 Hall Sensor (Pack of 3)

The A3144 Hall Effect Sensor is a reliable and versatile magnetic sensing device designed for detecting the presence or absence of magnetic fields. Based on the Hall effect principle, this sensor provides a digital output that switches states when exposed to a magnetic field of sufficient strength. It is an excellent choice for hobbyists, educators, and professionals developing projects that require contactless switching, position sensing, or speed detection, making it ideal for applications ranging from proximity detection to motor control and automation systems.

Key Features:

• Pack of 3: Convenient multi-pack for prototyping and multiple projects.
• Digital Output: Provides a clean on/off signal, simplifying integration with microcontrollers and digital circuits.
• Contactless Operation: Enables non-mechanical switching, reducing wear and extending operational life.
• Compact TO-92 Package: Three-pin through-hole design for easy breadboard and PCB mounting.
• Wide Operating Voltage Range: Typically 4.5V to 24V, compatible with most electronic systems.
• Built-in Hysteresis: Provides stable switching behaviour and noise immunity.
• Low Current Consumption: Efficient operation suitable for battery-powered applications.
• Open-Collector Output: Requires a pull-up resistor, allowing flexible interfacing with various logic levels.
• Part Number: A3144 (unipolar Hall effect switch).
• Operating Temperature Range: Typically -40°C to +85°C.
• Operate Point (Bop): Approximately 100 to 200 Gauss (typical activation threshold).
• Release Point (Brp): Approximately 25 to 100 Gauss (typical deactivation threshold).
• Output Voltage (Low): Typically 0.4V maximum when saturated.
• Supply Current: Typically 6mA to 10mA during operation.
• Maximum Output Current: 25mA sink capability.
• ESD Protection: Integrated protection for enhanced durability.

Applications

• Proximity and Position Sensing: Detect the presence or position of magnets in mechanical systems.
• Motor Speed Detection: Monitor RPM and rotational position in motors and encoders.
• Security Systems: Implement door and window sensors for alarm systems.
• Educational Projects: Teach magnetic sensing principles and digital electronics concepts.
• DIY Electronics and Home Automation: Create contactless switches, level detectors, and interactive installations.

Why Choose the A3144 Hall Effect Sensor? The A3144 Hall Effect Sensor combines simplicity, reliability, and versatility in a cost-effective package. Its unipolar switching characteristic and robust design make it an excellent choice for beginners learning sensor technology and experienced developers building sophisticated magnetic sensing applications. With three sensors included in each pack, you have everything you need to experiment and deploy multiple sensing points in your next project.