SUMCO

SUMCO Corporation (株式会社SUMCO) is a Japanese semiconductor company, manufacturing silicon wafers for semiconductor manufacturers worldwide.

History

The company was established in 1999 as a joint venture between Mitsubishi Materials Corporation and Sumitomo Metal Industries[4] and as of 2013 is the second largest silicon wafer producer in the world, after Shin-Etsu Handotai, with a market share of 30%.[5][6] In 2001, SUMCO employed about 1,300 people in Oregon, which in 2003 was reduced to 680 after the U.S. manufacturing operations were consolidated.[7]

In June 2006, SUMCO acquired a 51% controlling stake in Komatsu Electronic Metals Co., making them a member of the SUMCO group.[8][9] Komatsu Electronic Metals Co. has a venture partnership with Formosa Plastics Group and has wafer plants in Miyazaki and Nagasaki.[10][11]

SUMCO acquired Mitsubishi Polycrystalline Silicon America Corp and Semiconductor Polysilicon Business Of Mitsubishi from Mitsubishi Materials Corporation in May 2023.[12][13]

SUMCO is listed on the first section of the Tokyo Stock Exchange and is a constituent of the Nikkei 225 stock index.[14]

Products

The company manufactures the following products:[15]

• Single crystal silicon ingots
• Polished wafers
• Annealed wafers
• Epitaxial wafers
• Junction isolated wafers
• Silicon-on-Insulator (SOI) wafers
• Reclaimed polished wafers

External links