The Arizona plant began engineering wafer production in April using advanced 4-nanometer process technology. With production yields now on par with its facilities in Tainan, Taiwan, TSMC should be able to maintain its targeted gross margin rates of 53 percent or higher.
TSMC has much at stake with its US operations. The company plans to invest $65 billion in three plants in Arizona, making it the largest foreign direct investment in Arizona history and the largest foreign direct investment in a greenfield project in US history.