Honeywell Surface Mount Hall Effect Sensor, SOT 23, 3-Pin

The Honeywell e SS361CT high sensitivity latching hall-effect sensor ICs are small, sensitive, and versatile devices that are operated by the magnetic field from a permanent magnet or an electromagnet. They are designed to respond to alternating north and south poles. It is turned on by a north pole while is turned on by a south pole. It offer reverse polarity protection and deliver enhanced sensitivity of only 50 G typical, at 25 °C.

Enhanced sensitivity
Wide operating voltage range of 4 Vdc to 24 Vdc
Robust design will operate up to 125 °C [257 °F]
Temperature range -40 °C to 85 °C