TSMC has officially commenced mass production of advanced 4nm chips at its Fab 21 facility in Arizona, marking a pivotal milestone in the U.S. semiconductor industry. Confirmed by CEO C.C. Wei during TSMC’s recent earnings call, the facility began high-volume manufacturing in Q4 2024, utilizing the N4P process technology with yields comparable to TSMC’s Taiwan operations.
TSMC’s Advanced 4nm Production Begins in Arizona
This achievement shows TSMC’s ability to deliver cutting-edge manufacturing quality outside its home base. However, chips produced at the Arizona fab are priced higher than those made in Taiwan due to factors such as elevated depreciation costs, a smaller production scale, an underdeveloped local ecosystem, and the added expense of shipping chips back to Asia for packaging. Wei highlighted the “geographic flexibility” offered by U.S.-produced chips, which customers reportedly value despite the premium pricing.
The Arizona facility, part of TSMC’s $65 billion investment in U.S. production, currently operates Phase 1A with a production capacity of approximately 10,000 wafers per month. Reports suggest Apple, AMD, and Nvidia are among the first customers, with Apple testing its A16 Bionic chip for iPhones and S9 processors for Apple Watches, manufactured at the Arizona site.
TSMC plans to expand its presence further, with Phase 1B expected to boost capacity by 14,000 wafers per month later this year. The company also aims to bring its 2nm process to Arizona by 2028, with a third fab planned for completion by 2030.
These developments align with the objectives of the U.S. Chips and Science Act, which seeks to localize semiconductor manufacturing. While chip packaging will remain reliant on Taiwan until Amkor’s U.S. packaging plant becomes operational, TSMC’s investment in Arizona reflects a shift toward strengthening advanced chip supply chains in the U.S.
The U.S. and Netherlands have tightened export controls to limit China’s access to advanced semiconductors and AI technology, citing national security concerns. This move targets companies like Nvidia, TSMC, and ASML, imposing stricter licensing requirements and increased oversight to prevent cutting-edge technologies from reaching China.
Meanwhile, according to reports, TSMC has reportedly declined a deal to manufacture Samsung’s Exynos chips, possibly due to concerns over technology sharing with System LSI and commitments to key clients like Apple and Qualcomm. Samsung is also grappling with 3nm production challenges, affecting its Exynos roadmap and device plans.
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