The CH442PNSR with SOT-23-3L Hall Sensor ROHS is a surface mount electronic part manufactured by Cosemitech. It is a Hall Sensor, which is used to measure magnetic fields by detecting changes in the voltage or current. This component is designed with a small form factor, measuring only 0.99 mm x 1.27 mm x 1.27 mm. It has a wide operating temperature range of -40°C to 125°C and is compliant with the RoHS environmental safety standards. The CH442PNSR is also lead-free and can be used in a variety of applications, including automotive, commercial, industrial, and aerospace applications. It is an ideal choice for those looking for a robust, reliable, and cost-effective Hall Sensor.