The F0503S-2W is an electronic power module manufactured by Winchen. It is 19.6 mm wide, 7 mm high, and 10 mm thick. The module is compliant with the Restriction of Hazardous Substances (RoHS) Directive for electronic waste, and contains all certificated components. It includes 2 windings for the primary and secondary sides, as well as EMI filters for electromagnetic disturbances. The module also has a built-in over-temperature, over-voltage, over-current, and short-circuit protection feature for its applications. The F0503S-2W is a reliable and efficient solution for providing steady power, and is suitable for a variety of digital products, cellular telephones, and computer peripherals.