This document describes the features and characteristics of the STTH30W03C Turbo 2 ultrafast high voltage rectifier. The product features ultrafast switching, low reverse recovery current, low thermal resistance, etc. It is especially suitable for DC/DC and DC/AC converters in the secondary stage of MIG/MMA/TIG welding machines. Housed in ST's TO-247 package, this device offers high power integration for all welding machines and industrial applications.