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Datasheet
Latching Hall Effect Magnetic Switch Sensor With Open Drain Output In SIP-3 Through Hole Package
The A1221LUA-T Digital Magnetic Switch Latch Open Drain Hall Effect Sensor is a reliable magnetic sensing device designed for contactless switching, rotational sensing, and position detection applications. Built using Hall effect sensing technology, this latch-type magnetic switch detects magnetic polarity changes and maintains its output state until the opposite magnetic field is applied. Its stable switching characteristics make it suitable for embedded systems, industrial automation, motor control, and consumer electronics applications.
Featuring an open-drain output configuration and SIP-3 through-hole package, the A1221LUA-T allows simple PCB integration and flexible interfacing with microcontrollers and digital logic circuits. The contactless sensing operation improves reliability and operational lifespan by eliminating mechanical wear. This Hall effect sensor is commonly used in brushless DC motors, speed sensing systems, magnetic encoders, smart-home devices, and industrial automation systems.
Key Features
- Hall Effect Magnetic Detection: Reliable contactless magnetic sensing for embedded and industrial applications.
- Latching Switch Operation: Maintains output state until opposite magnetic polarity is detected.
- Open Drain Output: Flexible output interface compatible with multiple logic voltage systems.
- SIP-3 Through-Hole Package: Easy PCB mounting and durable mechanical installation.
- Digital Magnetic Switching: Stable ON OFF switching response for accurate sensing applications.
- Low Power Consumption: Suitable for portable and battery-powered electronic devices.
- Fast Magnetic Response: Supports rotational sensing and speed detection applications.
- Contactless Operation: Eliminates mechanical wear for improved durability and long-term reliability.
- Easy Embedded Integration: Compatible with microcontrollers, automation systems, and motor-control circuits.
Applications
- Brushless DC motor commutation
- Magnetic position sensing
- Rotational speed detection
- Industrial automation systems
- Smart-home magnetic switches
- Consumer electronics
- Embedded-system development
- Magnetic encoder systems
- Contactless switching applications
- Motion-control systems
