Arizona’s semiconductor boom has long been measured by its biggest numbers. Billions in investment. New fabrication plants. Thousands of jobs. TSMC’s latest expansion pushes those numbers to another level, but some of the clearest signs of its impact are showing up in the smaller facilities and industry connections forming around those massive projects.
In July, TSMC announced another $100 billion investment in Arizona, bringing its total planned commitment to $265 billion. The expansion calls for four additional fabs producing chips at 2 nanometers or more advanced technologies. Altogether, its Arizona plans now include 10 fabs, two advanced packaging facilities and a research and development center.
The first Arizona fab has been producing N4 technology at volume since late 2024. Construction of the second, designed for 3-nanometer production, is complete, with volume production expected in 2027. Once all announced fabs are completed, approximately 30% of TSMC’s 2-nanometer and more advanced manufacturing capacity is expected to be located in Arizona.
That level of production cannot operate on its own. Fabs depend on companies supplying equipment, specialty chemicals and gases, cleanroom systems, precision components, maintenance, logistics and other services. Advanced packaging adds another layer of testing, assembly and production support. As the campus grows, being close to one of the world’s largest chipmakers becomes increasingly valuable.
SEMICON West’s decision to make Phoenix its long-term home may be the most visible confirmation of that shift. The semiconductor industry’s flagship North American event came to Phoenix for the first time in 2025, marking its first move outside the San Francisco Bay Area. It became the event’s largest exhibition in more than 18 years, with 45% more booths and a 60% increase in registrations over 2024.
That was initially expected to begin an alternating schedule between Phoenix and San Francisco. Instead, SEMI announced in July that Phoenix will become the event’s long-term home beginning March 30 through April 1, 2027. Dates at the Phoenix Convention Center are already set for 2028 and 2029.
The move puts Arizona at the center of an annual gathering built around the entire semiconductor supply chain. Equipment and materials suppliers, chipmakers, engineers, researchers, investors and industry decision-makers come together to display products, meet customers and build partnerships. For companies considering an Arizona operation, it creates a recurring opportunity to see the market and the companies already building around it.
Those connections are already being made locally. In July, the U.S. Small Business Administration and Intel hosted a Supplier Matchmaking Expo in Scottsdale focused on the semiconductor and aerospace industries. Nearly 700 registered corporate and federal buyers and suppliers attended. Structured meetings gave specialty manufacturers and service providers direct access to procurement teams from Intel, Boeing, Honeywell Aerospace, Lockheed Martin, Siemens, NASA and other major buyers. The goal was practical: turn the demand created by Arizona’s largest manufacturers into contracts for domestic suppliers.
Some suppliers are already putting down roots. In July, Taiwan-based Cica-Huntek Chemical Technology activated its U.S. headquarters in Phoenix after investing approximately $8 million in a 25,880-square-foot plant and office facility. The company makes chemical delivery systems that move, mix and dilute high-purity chemicals inside advanced fabs. It plans to add cleanrooms and local assembly capacity.
That need for proximity is turning fab expansion into a broader buildout. New manufacturing and advanced packaging capacity creates demand for equipment, maintenance, logistics, technical support and housing for the growing workforce.
Developers are moving to meet that demand. In August, Mack Real Estate Group and McCourt Partners announced a 780,000-square-foot first industrial phase at Halo Vista near TSMC. Seven buildings are planned for suppliers, service providers, advanced manufacturers and logistics users. The larger industrial plan could eventually reach approximately 2.5 million square feet.
This is not demand based only on projections. Mack Real Estate Group says its separate Mack Innovation Park Deer Valley is more than 90% leased. The developer also sold more than 90 acres to TSMC suppliers in 2025.
The supplier wave is spreading beyond North Phoenix. In January, South Korea-based KoMiCo opened a $60-million, 125,000-square-foot facility in Mesa to clean, coat and repair semiconductor equipment parts. KoMiCo started with 50 jobs and expects to employ more than 200 people as the operation grows.
Arizona has proved it can attract the world’s largest semiconductor manufacturers. The next measure of success is how much of the production line follows. New facilities, direct supplier matchmaking and SEMICON West’s commitment to Phoenix suggest that next stage is already underway.
