SDK has been considering in-house production of SiC wafers, which are used as main material for SiC epitaxial wafers, aiming to improve the quality of its SiC epitaxial wafers and establish a stable supply system for them.
From 2010 to 2015, SDK took part in “Novel Semiconductor Power Electronics Project Realizing Low Carbon Emission Society *2,” backed by the Ministry of Economy, Trade and Industry and New Energy and Industrial Technology Development Organization (NEDO), as a member of the “Research and Development Partnership for Future Power Electronics Technology*3.”
In 2018, SDK took over the SiC-wafer related assets of Nippon Steel & Sumitomo Metal Group (current Nippon Steel Group)*4, and has been developing technologies for mass production of SiC wafers since then.
SDK has now decided to launch in-house mass production of 6-inch SiC wafers because multiple customers have adopted SDK’s SiC epitaxial wafers made from in-house produced single crystal 6-inch SiC wafers.
SDK will also continue purchasing SiC wafers from its partners in order to respond to the rapidly growing demand for SiC epitaxial wafers for power semiconductors.
The aim is to diversify sources of SiC wafers, so establishing a stable supply chain for SiC epitaxial wafers.