Hall effect magnetic field sensor
SS361CT / SS461C
Honeywell Sensing and Control
These bipolar sensor ICs have enhanced sensitivity which often allows for the use of less expensive magnets. They offer reverse polarity protection and deliver a stable output over a -40 °C to 125 °C [-40 °F to 257 °F] temperature range. Operation from any dc supply voltage from 4 Vdc to 24 Vdc is acceptable.
These Hall-effect devices are available in two package styles:
SS361CT: subminiature SOT-23 surface mount package (tape and reel packaging, 3,000 units per reel)
SS461C: leaded, flat TO-92 style package (bulk packaging, 1,000 units per bag)