Automotive bipolar Hall switch for high-temp sensing
The Infineon TLE49681MXTSA1 is a bipolar Hall-effect switch designed for automotive and industrial applications that demand reliable magnetic detection across wide temperature extremes. It switches on when a north pole field exceeds 2.25 mT and releases when the south pole field drops below -2.25 mT, making it suitable for position and speed sensing in brushless DC motors, transmission gear detection, and valve position feedback. The open-drain output sinks up to 25 mA, and the device operates from a 3 V to 32 V supply, covering 5 V logic, 12 V automotive battery, and 24 V industrial buses without an external regulator.
Temperature range and qualification — built for under-hood and industrial
AEC-Q100 qualification confirms it meets automotive reliability standards for stress, lifetime, and quality — a requirement for Tier-1 automotive programs and a strong indicator for long-life industrial designs that want a proven silicon process.
Package and footprint — hand-solderable SOT-23-3
Supplied in a PG-SOT23-3-15 package (industry-standard SOT-23-3 footprint), this is a three-pin device that hobbyists and rework techs can hand-solder with a fine-tip iron. The small body saves board space in compact sensor modules.