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    Introduced in this presentation is Honeywell's SS30AT Bipolar Hall-Effect Magnetic Position Sensor, available in a subminiature SOT-23 surface mount package that takes up less space on the printed circuit board (PCB). Available on tape and reel, the SS30AT often allows for lower-cost pick and place assembly, helping to reduce manufacturing costs. The SS30AT is a very small, versatile, digital Hall-effect device operated by the magnetic field from a permanent magnet or an electromagnet designed to respond to alternating North and South poles.