United Test and Assembly Center Ltd (Abbreviation: UTAC; Chinese: 联合科技; pinyin: Liánhé Kējì) is one of the largest providers of test and assembly services for a wide range of semiconductor devices, including memory, mixed-signal/RF and logic integrated circuits. Founded in 1997 by Inderjit Singh and commencing full operations in 1999, the company started out by acquiring the semiconductor test operations of Fujitsu Microelectronics Asia Pte. Ltd.
At the end of 2006, the company was ranked the fifth largest independent provider of semiconductor tests by Gartner Dataquest. Headquartered in Singapore, UTAC has manufacturing facilities in Singapore, Shanghai, China and Taiwan with global sales offices located worldwide including the United States, Italy and Japan.
Traded as: SGX: U12