United Microelectronics Corporation

United Microelectronics Corporation (UMC; Chinese: 聯華電子; pinyin: Liánhuá Diànzǐ) is a Taiwanese company based in Hsinchu, Taiwan. It was founded as Taiwan's first semiconductor company in 1980 as a spin-off of the government-sponsored Industrial Technology Research Institute (ITRI).[2]

United Microelectronics Corporation
TWSE: 2303
IndustrySemiconductor Foundry
Founded1980; 41 years ago (1980)
HeadquartersHsinchu Science Park
Hsinchu, Taiwan
Key people
Stan Hung, Chairman
SC Chien, Co-president
Jason Wang, Co-president
RevenueUS$5 billion (2019)
Number of employees
Increase 19,577 (2020) [1]
The Singapore factory and offices of United Microelectronics Corporation.

UMC is best known for its semiconductor foundry business, manufacturing integrated circuits wafers for fabless semiconductor companies. In this role, UMC is ranked behind competitors TSMC and GlobalFoundries.[3] It has four 300 mm fabs, one in Taiwan, one in Singapore, one in China, and one in Japan.[2]

UMC is listed on the Taiwan Stock Exchange as 2303. UMC has 12 manufacturing facilities worldwide, employing approximately 19,500 people.


  • On May 22, 1980, UMC was spun off from the Industrial Technology Research Institute and was formally established as the first private integrated circuit company in Taiwan.
  • 1985: UMC was officially listed on the Taiwan Stock Exchange (code: 2303). It was the first listed semiconductor company in Taiwan. At that time, Morris Chang ever was its chairman.
  • 1995: UMC decided to transform from an IDM company with its own products to a professional pure-play foundry.
  • 1996: Spun off its IC design units to establish MediaTek, Novatek, ITE Technology, Faraday Technology, AMIC Technology, and Davicom.
  • 1999: Fab 12A 12-inch wafer fab in Tainan Science Park was officially established.
  • 2000:
    • Lists on the New York Stock Exchange (code: UMC) as Taiwan's first semiconductor company to do so.[4]
    • Produces the first chips using copper process technology and the first 0.13 micron ICs in the semiconductor industry.
  • 2004: 12-inch wafer fab in Singapore enters mass production.
  • 2008: Listed as a constituent stock on the Dow Jones Sustainability Index (DJSI) for the first time.[5]
  • 2010: 30th anniversary of the company.
  • 2013: Fully acquires "Hejian Technology Wafer Fab" in Suzhou, Mainland China.
  • 2015: USCXM 12-inch wafer fab located in Xiamen, Fujian Province, China was officially established.[6]
  • 2017: 28 nm mass production begins at USCXM in Xiamen, Mainland China.
  • 2019: Fully acquired Japan-based Mie Fujitsu Semiconductor.[7][8][9]
  • 2020: Reached a plea agreement with the U.S. Department of Justice to resolve a 2018 trade secrets case.[10]

Fab list[11]Edit

Fab Node Location Wafer diameter Wafers per month
WKT 450-350 nm Hsinchu, Taiwan 150 mm 31,000
Fab 8AB 500-250 nm Hsinchu, Taiwan 200 mm 67,000
Fab 8C 350-110 nm Hsinchu, Taiwan 200 mm 37,000
Fab 8D 130-90 nm Hsinchu, Taiwan 200 mm 31,000
Fab 8E 500-180 nm Hsinchu, Taiwan 200 mm 37,000
Fab 8F 180-150 nm Hsinchu, Taiwan 200 mm 40,000
Fab 8S 180-110 nm Hsinchu, Taiwan 200 mm 31,000
Fab 8N (He Jian) 500-110 nm Suzhou, China 200 mm 76,000
Fab 12A 130-14 nm Tainan, Taiwan 300 mm 87,000
Fab 12i 130-40 nm Singapore 300 mm 53,000
Fab 12X (United Semiconductor) 40-28 nm Xiamen, China 300 mm 19,000 -> 25,000 (2021)
Fab 12M (USJC, former Fujitsu) 90-40 nm Mie, Japan 300 mm 33,000

See alsoEdit


  1. ^ "United Microelectronics: Number of Employees 2006-2020". Macrotrends. Retrieved 2021-03-11.
  2. ^ a b "UMC Overview". UMC. UMC. Archived from the original on 2005-03-19. Retrieved 2010-06-29.
  3. ^ "Pure-Play Semiconductor Foundry Market Set for 12 Percent Growth in 2012". iSuppli. 2012-04-11. Retrieved 2012-06-02.
  4. ^ "UMC Lists on NYSE".
  5. ^ "UMC Selected as DJSI component".
  6. ^ "UMC begins construction of 12-inch fab in Xiamen". DIGITIMES. Retrieved 2020-11-10.
  7. ^ "UMC Receives Final Approval for 100% Acquisition of Mie Fujitsu Semiconductor". www.businesswire.com. September 25, 2019.
  8. ^ "UMC Receives Final Approval for 100% Acquisition of Mie Fujitsu Semiconductor". www.bloomberg.com. 2019-09-25. Retrieved 2020-08-10.
  9. ^ "Message from the President | USJC:United Semiconductor Japan Co., Ltd".
  10. ^ "UMC and US Department of Justice reach Plea Agreement on Trade Secret Case". www.businesswire.com. 2020-10-29. Retrieved 2020-11-09.
  11. ^ "Q2 2020 Investor Conference Official Material" (PDF).

External linksEdit