Doosan has acquired SK siltron css for $1.6 billion, completing a transaction that transfers full ownership of the silicon carbide wafer specialist to the South Korean industrial conglomerate. The deal, finalized through Doosan’s designated holding entity, brings the former SK Group subsidiary under new management effective immediately.
SK siltron css operates as a vertically integrated supplier of silicon carbide (SiC) wafers and epitaxy services, with capabilities spanning crystal growth, wafer fabrication, and epitaxial layer deposition. The company, which has been part of the semiconductor supply chain for over three decades, recently expanded its technology portfolio through the acquisition of SiC wafer production processes from DuPont. Its products serve applications tied to electric vehicles, renewable energy systems, and high-efficiency power electronics.
For Doosan, the purchase represents a direct entry into the wide-bandgap semiconductor materials market, a segment driven by rising demand for energy-efficient power conversion. The acquisition provides Doosan with an established manufacturing base and technical expertise in SiC substrates, a critical component for next-generation power devices. SK siltron css will operate as a standalone business unit within Doosan, retaining its existing production facilities and customer relationships.
The transaction is expected to strengthen Doosan’s industrial portfolio by adding a materials business with long-term growth potential, while SK siltron css gains access to the financial resources and operational scale of a larger parent group. The combined entity will focus on expanding SiC wafer output to meet growing orders from power semiconductor manufacturers, with no immediate changes planned to the company’s workforce or production sites.