The STTH112U is a diode rectifier manufactured by STMicroelectronics, featuring a Hyperfast 1.2kV 1A 1.9V @ 1A 75ns SMB (DO-214AA) mounting package that is compatible with surface mounting techniques. It is RoHS compliant, meaning it is free of hazardous materials. This part is widely used in power supplies, power converters, and other power applications. It is designed to provide fast switching times, high efficiency, and improved surge handling when compared to traditional rectifiers.