The RS3MGB with Diodes - Rectifiers - Fast Recovery SMB (DO-214AA) RoHS is a high-speed, silicon rectifier diode manufactured by Pingwei. The diode is designed for general purpose rectification and designed to offer fast recovery times, making it ideal for use in high-frequency applications. This device is available in a small plastic SMB package for surface mount applications, and features a unique construction to provide superior performance. The diode is compliant with RoHS (Restriction of Hazardous Substances) Regulations, which means it does not contain any hazardous materials, and is a cost-effective solution for a wide range of diode applications.