Allegro Microsystems Surface Mount Linear Hall Effect Sensor 2.5 V to 3.5 V Supply, 10 mV/g Sensitivity, 6-Pin A1395SEHLT-T

Allegro Microsystems A1395SEHLT-T is a high-performance linear Hall Effect sensor designed for surface mounting in electronic assemblies. This BiCMOS technology sensor operates with a supply voltage range from 2.5 V to 3.5 V, delivering a ratiometric voltage output directly proportional to the applied magnetic field strength. Its 6-pin MLP package offers compact dimensions of 3 mm width, 2 mm length, and 670 μm height, facilitating tight integration in PCB layouts.

The sensor is optimized for low power consumption with an active supply current of just 3.2 mA and includes a user-selectable sleep mode which significantly reduces current draw to less than 25 μA, ideal for battery-operated or energy-efficient designs. During sleep mode, the output enters a high-impedance state ensuring no erroneous signals are read.

With a response time of 40 microseconds, the device is suitable for applications requiring fast magnetic field detection. It provides robust operation over a wide temperature range from - 20°C to 85°C, making it suitable for industrial, automotive (non-automotive standard), and instrumentation environments. The sensor’s output sensitivity is fixed at 10 mV/g, calibrated for temperature stability to maintain accuracy over expected operating conditions.

The A1395SEHLT-T sensor features integrated electrostatic discharge (ESD) protection exceeding 3 kV, enhancing device reliability in field applications. It complies with RoHS and Pb-free standards ensuring environmentally responsible manufacturing compliance.

Typical use cases include motion detection, position sensing, speed measurement, and current sensing in industrial automation, consumer electronics, robotics, and instrumentation systems. Its low voltage operation and small form factor enable versatile deployment in compact electronic modules.

The sensor provides a ratiometric output proportional to magnetic field strength for precise detection. Low active mode power consumption and user-selectable sleep mode enhance energy efficiency. Wide operating temperature range supports reliability in harsh environments.

Enhanced ESD protection safeguards against voltage spikes in industrial applications. Compact 6-pin MLP package ensures easy mounting and minimal PCB area usage. Preset sensitivity and offset tuning at final test ensure consistent performance.

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