The HX3415A MOSFET P Trench 20V 4A (Tj=125°C) is a small, RoHS certified semiconductor device from Hengjiaxing. This component is housed in a SOT-23 package and is designed to operate at 900mV @ 250uA, 45 mΩ @ 4A, and 4.5V. It's suitable for a wide range of applications, including DC-DC conversion, switching regulators, DC-AC converters, mobile phone power supplies, PC motherboards, power drivers, and more. The HX3415A is an excellent choice for those seeking a reliable and robust MOSFET at an affordable price.