Hall-effect switch for harsh environments
The TLE49662GHTSA1 is a temperature-compensated Hall-effect switch from Infineon's TLE series, designed for digital magnetic sensing in applications that see wide temperature swings. It operates over a junction temperature range of -40°C to 150°C, making it suitable for under-hood automotive, industrial motor drives, and outdoor equipment where the ambient can push past 125°C. With a supply voltage of 2.7V, it can run directly off a 3.3V rail or a low-voltage battery without an extra regulator, simplifying the power tree in space-constrained designs.
Magnetic thresholds and output drive
The switch trips at 10mT and releases at -10mT, giving a 20mT hysteresis that prevents chatter from vibration or magnetic ripple. This bipolar latching characteristic is typical for speed and position sensing where a rotating magnet passes the sensor. The digital output can sink or source up to 10mA, enough to drive a logic input or a small relay coil directly. The 7mA switching current at 25°C keeps the self-heating low, which matters when the junction is already near the 150°C ceiling.
Active production, no end-of-life pressure
Infineon lists the TLE49662GHTSA1 as Active. The TSOP6-6-9 package is a standard surface-mount footprint, stocked across multiple distributor channels.