The WSF4022 MOSFET with TO-252-4L RoHS manufactured by Winsok is a MOSFET-based electronic component that is designed to control high voltage or heavy current applications. It uses a single N-channel JFET structure embedded into a 4-Lead Plastic package for heat-dissipation and noise-free operation. It features a maximum drain-source voltage of 230V and a maximum drain current of 4A, allowing it to be used for applications such as DC-DC converters, high voltage switching, power supplies, and more. Additionally, the RoHS-compliant construction of the WSF4022 ensures it does not contain lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl or polybrominated diphenyl ether.