HGDFST021B is a magnetic sensor with switching output type designed for detection applications. It features a typical drive voltage of 5V (4.5V to 5.5V operating range) with a current consumption of 1.65 mA at rated voltage, housed in a compact SOT23 package measuring 2.9×2.8×1.1 mm. The device operates reliably across a wide temperature range of -40°C to +85°C and is configured for single polarity/single output functionality. This sensor is ideal for position detection, proximity sensing, and magnetic field detection applications where compact form factor and low-profile design are essential requirements.