Mitsubishi Electric has been dedicated to the development and application of SiC (Silicon Carbide) power devices for many years. We are pleased to present the "SiC Lecture Series" which systematically explains the fundamentals, manufacturing processes, and reliability of SiC devices that support next-generation power conversion technology, aimed at engineers, researchers, and students. This series is not merely a product introduction but is structured around themes such as material properties, structure, design, thermal characteristics, and reliability, based on extensive experience and knowledge. Please utilize it as a bridge connecting theory and practice.