Why is TSMC Arizona's advanced-packaging capacity not yet operational?
Arizona's packaging capability is part of TSMC's expansion plan, not an already operating complement to its chip fab. TSMC's US$165 billion plan included two packaging plants, and Blackwell chip production had begun in Phoenix, but TSMC said in March 2026 that all of its advanced packaging remained in Taiwan. Initial construction of Arizona's first advanced-packaging plant began the next month, followed by another planned packaging expansion in July. For supply-chain planning, treat Arizona fabrication and Arizona advanced packaging as separate milestones; TSMC gave no firm schedule for the sites announced in July.
Trace the chain
Arizona chip output
- 1Blackwell platform announcedAnnouncement
Blackwell platform announced at GTC 2024 with B200 and GB200
Nvidia announced the Blackwell architecture in San Jose, listing the B200 Tensor Core GPU and the GB200 Grace Blackwell Superchip, which pairs two B200 GPUs with a Grace CPU. The release claims up to 25x lower cost and energy for LLM inference compared with H100.
Nvidia Investor Relations ·
Packed with 208 billion transistors, Blackwell-architecture GPUs are manufactured
Why it matters here. Blackwell's announcement preceded TSMC's Arizona expansion plan, which added two advanced-packaging facilities to the U.S. buildout.
- 2Packaging enters the planAnnouncement
TSMC adds US$100 billion for three more fabs, two packaging plants and an R&D center: US$165 billion total
Announced at the White House with President Trump, the expansion took TSMC's planned U.S. investment from US$65 billion to US$165 billion, covering three additional fabs, two advanced packaging facilities and a major R&D team center in Arizona.
TSMC Newsroom ·
The expansion includes plans for three new fabrication plants, two advanced packaging facilities and a major R&D team center.
Why it matters here. TSMC's US$165 billion Arizona expansion explicitly included two advanced-packaging facilities before NVIDIA reported Blackwell chip production at TSMC's Phoenix plants.
TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
- 3Blackwell reaches PhoenixAnnouncement
NVIDIA says Blackwell chips start production at TSMC Phoenix plants
NVIDIA announced that Blackwell chips had started production at TSMC chip plants in Phoenix, Arizona. The statement identified the production location as TSMC's Phoenix plants.
NVIDIA Newsroom ·
NVIDIA Blackwell chips have started production at TSMC’s chip plants in Phoenix, Arizona.
Why it matters here. Although Blackwell chips had started production at TSMC's Phoenix chip plants, TSMC later said that all of its advanced packaging remained in Taiwan.
TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
The packaging gap
- 5First packaging plant startsUpdate
Initial construction starts on fourth Arizona fab and packaging plant
TSMC started initial construction on its fourth Arizona fab and first advanced-packaging plant. The City of Phoenix reported that TSMC announced the start during the preceding month.
City of Phoenix ·
Just last month, TSMCannounced that initial construction had started on the fourth fab and the first advanced packaging plant which is a key supply chain cog.
Why it matters here. Initial construction had begun on Arizona's first advanced-packaging plant, while TSMC later described further Arizona advanced-packaging fabs as planned and without a firm schedule.
TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
- 6More packaging plannedAnnouncement
Another US$100 billion for Arizona: total reaches US$265 billion for more 2nm fabs and packaging
Alongside second-quarter 2026 results, chairman C.C. Wei said TSMC would invest an additional US$100 billion in Arizona to build several more wafer fabs for 2-nanometer and below technologies plus advanced packaging fabs, bringing the state total to US$265 billion. Wei said there was a plan but no firm schedule for the new sites.
CNBC ·
TSMC will invest an additional $100 billion in Arizona to meet strong customer demand, bringing its total investment in the state to $265 billion, Wei added.
Why it matters here. The US$265 billion plan's additional packaging component confirms that Arizona packaging remains part of an expanding planned cluster.
TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
What pushes back
- 4Packaging remains in Taiwan
TSMC says all advanced packaging remains in Taiwan
TSMC told EE Times that all of its advanced packaging was in Taiwan. TSMC planned two advanced-packaging facilities at its Arizona site.
EE Times ·
Currently, all of TSMC’s advanced packaging is in Taiwan.
What it pushes against. This pushes against the idea of a complete Arizona chip-to-package chain because TSMC said all advanced packaging remained in Taiwan.
TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
Changes to this chain
- Proposal #37 accepted (verify:v1): why of step 1 -> Blackwell's announcement preceded TSMC's Arizona expansion plan, which added two advanced-packaging facilities to the U.S. buildout.; why of step 2 -> TSMC's US$165 billion Arizona expansion explicitly included two advanced-packaging facilities before NVIDIA reported Blackwell chip production at TSMC's Phoenix plants.; why of step 3 -> Although Blackwell chips had started production at TSMC's Phoenix chip plants, TSMC later said that all of its advanced packaging remained in Taiwan.; why of step 5 -> Initial construction had begun on Arizona's first advanced-packaging plant, while TSMC later described further Arizona advanced-packaging fabs as planned and without a firm schedule.
Timelines in this chain
- Nvidia Data Center GPUs: Hopper, Blackwell and Vera Rubin
- TSMC Arizona: From a $12 Billion Fab to a $265 Billion Gigafab Cluster
- Intel Foundry and 18A: From IDM 2.0 to a Government-Owned Stake
A chain is written by the editor from entries already published on the timelines above, each of which was read against its source before publication. The chain changes when those entries do. Data and terms.