United Microelectronics Corporation
|Traded as||TWSE: 2303|
|Headquarters||Hsinchu Science Park|
|Stan Hung, Chairman|
SC Chien, Co-president
Jason Wang, Co-president
|Revenue||US$5 billion (2019)|
Number of employees
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).
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. It has four 300 mm fabs, one in Taiwan, one in Singapore, one in China, and one in Japan.
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: Officially listed on the Taiwan Stock Exchange (code: 2303). It was the first listed semiconductor company in Taiwan.
1995: 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 as Taiwan's first semiconductor company to do so.
2000: 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.
2010: 30th anniversary of the company.
2013: Fully acquires Hejian Technology Wafer Fab in Suzhou, China..
2015: USCXM 12-inch wafer fab located in Xiamen, Fujian Province, China was officially established. 
2017: 28nm mass production begins at USCXM in Xiamen.
2020: Reached a plea agreement with the U.S. Department of Justice to resolve a 2018 trade secrets case.
|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|
- "UMC Overview". UMC. UMC. Archived from the original on 2005-03-19. Retrieved 2010-06-29.
- "Pure-Play Semiconductor Foundry Market Set for 12 Percent Growth in 2012". iSuppli. 2012-04-11. Retrieved 2012-06-02.
- "UMC Lists on NYSE".
- "UMC Selected as DJSI component".
- "UMC begins construction of 12-inch fab in Xiamen". DIGITIMES. Retrieved 2020-11-10.
- "UMC Receives Final Approval for 100% Acquisition of Mie Fujitsu Semiconductor". www.businesswire.com. September 25, 2019.
- "UMC Receives Final Approval for 100% Acquisition of Mie Fujitsu Semiconductor". www.bloomberg.com. 2019-09-25. Retrieved 2020-08-10.
- "Message from the President | USJC：United Semiconductor Japan Co., Ltd".
- "UMC and US Department of Justice reach Plea Agreement on Trade Secret Case". www.businesswire.com. 2020-10-29. Retrieved 2020-11-09.
- "Q2 2020 Investor Conference Official Material" (PDF).
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