TSMC to add Arizona packaging

TSMC plans to open an advanced chip-packaging plant in Arizona by 2029, adding a final manufacturing step the U.S. site does not have today. (reuters.com) Packaging is the stage where finished silicon dies are stacked, wired together and turned into a usable processor, especially for artificial-intelligence chips that combine several pieces in one package. TSMC executive Kevin Zhang told Reuters the Arizona facility is meant to bring that work closer to its U.S. fabs. (reuters.com) TSMC said in its April 22 North America Technology Symposium that its new A13 process is scheduled for production in 2029, and it previewed an A12 platform enhancement for the same year. The company said A13 is a direct shrink of A14 and offers 6% area savings with backward-compatible design rules. (tsmc.com) That timing puts two bottlenecks on the same calendar: the next wave of leading-edge logic and the packaging needed to assemble those chips into high-end processors. Reuters reported that advanced packaging has become a supply constraint for customers including Nvidia because many AI chips are built from several chiplets rather than one large die. (reuters.com) TSMC has already started leading-edge production in Arizona, and U.S. Commerce Secretary Gina Raimondo told Reuters in November 2024 that the first fab was making 4-nanometer chips “on par in yield and quality with Taiwan.” Reuters said TSMC reiterated this week that Arizona yields are comparable to Taiwan. (reuters.com, reuters.com) The company had signaled the packaging move earlier this year. In its January earnings call, TSMC said it was applying for permits to begin construction of its first advanced-packaging plant in an existing Arizona facility, but did not give an opening date then. (reuters.com, investor.tsmc.com) TSMC is pairing that U.S. expansion with a cheaper lithography plan. At the symposium, Zhang said the company has no current plan to buy ASML’s High-NA extreme ultraviolet machines, which Bloomberg and other outlets reported cost more than €350 million each, and said existing EUV tools can carry TSMC through 2029. (bloomberg.com, electronicsweekly.com) The broader Arizona buildout is much larger than one packaging line. TSMC and the White House said in March 2024 that the company would raise its planned U.S. investment to more than $65 billion and add a third Arizona fab, with the first plant set for 4-nanometer production, the second for 3-nanometer, and the third intended for 2-nanometer or more advanced technology. (whitehouse.gov, tsmc.com) If TSMC hits the 2029 target, Arizona would handle more of the chipmaking chain from wafer fabrication to the packaging step that turns multiple dies into finished AI processors. The next test is whether construction permits and customer demand keep that schedule intact over the next three years. (reuters.com, tsmc.com)