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Advanced Apple Silicon remains tied to Taiwan despite Arizona fab expansion

A walk-through of Apple partners' chip fabrication lines practically demonstrates how the company's push to expand semiconductor manufacturing in Arizona and Texas is mainly aimed at reducing geopolitical risk, and less about bringing back large-scale U.S. factory jobs.TSMC workersA February 25 report outlines how Apple and its suppliers are rebuilding parts of the U.S. chip supply chain, from silicon wafers in Texas to final assembly in Houston. The strategy centers on strengthening supply resilience after pandemic shortages and rising tension around Taiwan.Apple Chief Executive Tim Cook has appeared alongside President Donald Trump to spotlight domestic investment. Chip fabrication plants today are highly automated operations powered by robotics and precision machinery. Continue Reading on AppleInsider | Discuss on our Forums

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News

Advanced Apple Silicon remains tied to Taiwan despite Arizona fab expansion

[Image: Andrew Orr's profile picture]

Andrew Orr

Wed Feb 25 2026, 02:09 PM EST
3 minute read

TSMC workers

A February 25 report outlines how Apple and its suppliers are rebuilding parts of the U.S. chip supply chain, from silicon wafers in Texas to final assembly in Houston. The strategy centers on strengthening supply resilience after pandemic shortages and rising tension around Taiwan.

Apple Chief Executive Tim Cook has appeared alongside President Donald Trump to spotlight domestic investment. Chip fabrication plants today are highly automated operations powered by robotics and precision machinery.

These facilities don't require the large workforces that once defined American factory expansion.

TSMC Arizona fab can produce some Apple Silicon chips

The domestic pipeline, as reported by The Wall Street Journal, begins in Sherman, Texas, where purified silicon is melted and formed into 12-inch wafers. Those wafers are shipped to Taiwan Semiconductor Manufacturing Co.'s Arizona fab, where extreme ultraviolet lithography systems etch them into logic chips inside sealed clean rooms.

[Image: Desert landscape with cacti, small shrubs, and dry grasses in the foreground, and a large industrial facility with cranes and warehouses in the background under an overcast sky]

TSMC's Arizona campus covers about 2,000 acres. Image credit: Christopher Payne

TSMC's Arizona campus covers about 2,000 acres and is part of a massive investment plan worth tens of billions of dollars, with more expansion on the horizon. The facility produces A16 processors used in iPhone 15 and the entry-level iPad.

Apple doesn't run the fabs, but its long-term chip orders provide TSMC with the financial certainty to build expensive fabrication plants. Apple's demand for advanced silicon has been a key driver behind TSMC's most ambitious projects.

Advanced Apple Silicon manufacturing still depends on Taiwan

Arizona has made progress, but the latest A19 chip in the iPhone 17 still relies on Taiwan's advanced manufacturing technology, as does the M5. Taiwan has the leading process nodes, deep engineering talent, established supply networks, and higher production volume.

And, TSMC maintaining the most recent chip fabrication tech is mandated by Taiwan law.

Chips made in Arizona need extra packaging steps handled mostly in Asia before they can be used in finished devices. Advanced packaging remains a major gap in the domestic supply chain.

[Image: Industrial machine polishing or inspecting a spinning silicon wafer, creating blurred circular light patterns across the reflective disk in a high-tech manufacturing environment]

A silicon wafer after it has been ground. Image credit: Christopher Payne

Advanced packaging is the stage where finished silicon dies are cut from wafers and mounted onto substrates. Engineers wire them together and connect them to memory and other components.

The process can include stacking multiple dies vertically and using high-bandwidth interconnects before sealing the chip for installation on a circuit board. For high-performance processors such as Apple Silicon, packaging has a direct impact on speed, power efficiency, and heat management.

Arizona can produce mature and advanced nodes, but Taiwan remains central to Apple's most sophisticated silicon. Amkor's multibillion-dollar advanced packaging campus in Arizona, expected to begin production in 2028, won't immediately eliminate the need to send chips overseas for packaging.

Houston assembly shows limits of U.S. Apple manufacturing scale

Apple's most visible U.S. assembly efforts are concentrated in Houston, where Foxconn assembles roughly 10 AI servers per hour for Apple's data center operations. The company is adding Mac mini desktop assembly at the same site later in 2026.

[Image: Workers in white lab coats servicing tall server racks in a bright, clean data center hallway, with overhead cable trays and blue monitors mounted on equipment along both sides]

An Apple server testing line in Houston, Texas. Image credit: Christopher Payne

In Texas, hundreds of workers are involved in final assembly, testing, and packaging. The workforce is small compared with the massive iPhone assembly complexes in Asia, where tens of thousands of people are employed, very seasonally.

Servers and desktop computers are easier to assemble in the United States because they ship in much lower volumes than iPhones. iPhones move in the hundreds of millions each year, and that scale still favors Asia for Apple's highest-volume products.

Apple's U.S. semiconductor strategy is a long-term supply chain hedge

Apple's U.S. semiconductor strategy plays out over decades, not annual product launches. Matching Taiwan's scale and expertise would require sustained investment over many years.

[Image: Industrial robotic arm working over a circular platform filled with large interlocking gears and discs inside a clean, enclosed manufacturing environment with machinery and panels in the background]

Silicon wafers getting polished. Image credit: Christopher Payne

Arizona fabs help reduce exposure to supply disruptions caused by pandemics, natural disasters, or geopolitical conflict. They add another layer of protection to Apple's global supply chain.

Taiwan still leads in cutting-edge Apple Silicon manufacturing, with the most advanced process nodes concentrated there. For now, the U.S. expansion functions as insurance against geopolitical disruption.

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[Original source](https://appleinsider.com/articles/26/02/25/advanced-apple-silicon-remains-tied-to-taiwan-despite-arizona-fab-expansion?utm_source=rss)