2PCS A3144E HALL EFFECT SENSOR

🔹 2pcs A3144E Hall Effect Sensor – Unipolar Digital Switch (TO-92)

This pack contains two A3144E (A3144) unipolar Hall effect sensors, designed for magnetic field detection in digital switching applications. These sensitive sensors provide a low-level output when a south magnetic field is present, making them ideal for position sensing, speed measurement, and contactless switching in automotive, industrial, and DIY projects.

✅ Specifications:

• Sensor Type: Unipolar Digital Hall Effect Switch

• Model: A3144E / A3144 (Allegro MicroSystems)

• Package: TO-92 (3-pin, through-hole)

• Operating Voltage: 4.5V – 24V DC

• Output Type: Digital, open-collector (active low)

• Output Current: 25 mA (max)

• Operating Point (Bop): 35mT – 90mT (south pole activation)

• Release Point (Brp): 15mT – 60mT

• Hysteresis: 15mT (typical)

• Operating Temperature: -40°C to +150°C

• Rise Time: 0.4µs (typical)

• Fall Time: 1.5µs (typical)

• Pinout: 1 = VCC, 2 = GND, 3 = OUTPUT

• Quantity: 2 Pieces

📦 Applications:
✔️ RPM measurement (bike wheel, motor speed sensors)
✔️ Proximity and position detection
✔️ Contactless limit switches
✔️ Brushless DC motor commutation
✔️ Flow meters and turbine sensors
✔️ Automotive speed sensors
✔️ Security system magnetic contacts
✔️ DIY tachometer projects
✔️ Arduino and Raspberry Pi sensor interfacing