Article · Wikipedia archive · Last revised Jul 17, 2026

SUMCO

SUMCO Corporation is a Japanese semiconductor company, manufacturing silicon wafers for semiconductor manufacturers worldwide.

Last revised
Jul 17, 2026
Read time
≈ 2 min
Length
486 w
Citations
15
Source
Wikipedia ↗
SUMCO Corporation
TypePublic KK
TYO: 3436
IndustrySemiconductor
Predecessors
  • Silicon United Manufacturing
  • Sumitomo Mitsubishi Silicon
FoundedJuly 30, 1999 (1999-07-30)
Headquarters1-2-1 Shibaura, Minato, Tokyo 105-8634, Japan
Area served
Worldwide
Key people
Mayuki Hashimoto
(President and CEO)
Services
RevenueIncrease$ 1.83 billion USD (FY 2013) (¥ 200.58 billion JPY) (FY 2013)
Increase$ 16.5 million USD (FY 2013) (¥ 1.8 billion JPY) (FY 2013)
Number of employees
7,277 (consolidated as of December 31, 2013)
Websitewww.sumcosi.com/english/index.html
Footnotes
123

SUMCO Corporation (株式会社SUMCO, Kabushiki-gaisha Samuko; formerly Silicon United Manufacturing Corporation and Sumitomo Mitsubishi Silicon Corporation) 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 Industries4 and as of 2013 is the second largest silicon wafer producer in the world, after Shin-Etsu Handotai, with a market share of 30%.56 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.89 Komatsu Electronic Metals Co. has a venture partnership with Formosa Plastics Group and has wafer plants in Miyazaki and Nagasaki.1011

SUMCO acquired Mitsubishi Polycrystalline Silicon America Corp and Semiconductor Polysilicon Business Of Mitsubishi from Mitsubishi Materials Corporation in May 2023.1213

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

References

References

  1. "Corporate Data". SUMCO Corporation. Retrieved September 26, 2014.
  2. "Company Profile". Bloomberg L.P. Retrieved September 26, 2014.
  3. "Financials Statements". Bloomberg Businessweek. Retrieved September 26, 2014.{{cite web}}: CS1 maint: deprecated archival service (link)
  4. "SUMCO Corporation Company Profile". Hoover's. Retrieved September 26, 2014.
  5. "Market Share Analysis: Silicon Wafers, Worldwide, 2013". Gartner. Retrieved September 26, 2014.
  6. Kathryn Lynch-Morin (April 22, 2013). "Hemlock Semiconductor named supplier of the year by silicon-wafer producer SUMCO". MLive Media Group. Retrieved September 26, 2014.
  7. EETimes (2003-06-04). "Sumco cuts jobs, shuts down U.S. wafer plants". EE Times. Retrieved 2024-06-13.
  8. "Sumco to acquire Komatsu unit to lead world in silicon wafer sales. - Free Online Library". www.thefreelibrary.com. Retrieved 2024-06-13.
  9. LaPedus, Mark (2006-09-12). "Sumco buys KEM, boosts 200-mm lines". EE Times. Retrieved 2024-06-13.
  10. LaPedus, Mark (2006-06-14). "Sumco takes control of Komatsu Electronic". EE Times. Retrieved 2024-06-13.
  11. Lapedus, Mark (2006-06-14). "Sumco takes control of Komatsu Electronic". EDN. Retrieved 2024-06-13.
  12. MarketScreener (2022-10-28). "Sumco Corporation agreed to acquire Mitsubishi Polycrystalline Silicon America Corp and Semiconductor Polysilicon Business Of Mitsubishi from Mitsubishi Materials Corporation. - MarketScreener". www.marketscreener.com. Retrieved 2024-06-13.
  13. Nishimura; Harada, Asahi-Mitsuhiro; Tatsumi, Kaoru; Kobayashi, Kazumaro; Kobayashi, Sakka (2023-05-17). "Mitsubishi Materials Corporation: Sale of semiconductor polysilicon business to SUMCO Corporation". Lexology. Retrieved 2024-06-13.
  14. "Components:Nikkei Stock Average". Nikkei Inc. Retrieved September 26, 2014.
  15. "Product Lineup". SUMCO Corporation. Retrieved September 26, 2014.
External links