Semiconductor History | 4500 South Dobson Road, 8 February 2017 — Intel Restarts the Empty Fab 42
· 2017-2
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Semiconductor History | 4500 South Dobson Road, 8 February 2017 — Intel Restarts the Empty Fab 42
kevin
Intel technician Michelle Blackwell shows silicon wafers to President Joe Biden during a 2024 tour of the Ocotillo campus, years after Fab 42's empty shell finally became a working factory.
On 8 February 2017, Intel announced that it would spend $7 billion to finish Fab 42 in Chandler, Arizona. The factory had been announced in 2011 and its building was substantially completed, but Intel paused equipment installation in 2014 as personal-computer demand weakened.
That pause separated the cheap-looking part of a fab from the truly expensive part.
The shell already contained heating, air handling, utilities, and immense cleanroom space, yet without lithography, deposition, etch, and metrology tools it could not make chips. Leaving those tools out preserved capital and allowed Intel to target a later process, but it also left a multibillion-dollar monument to a demand forecast that had changed.
Restarting the project was a vote for long-term manufacturing capacity.
Intel said the completion would create about 3,000 company jobs and support thousands more in construction and the supply chain. Fab 42 eventually became fully operational in 2020, producing processors on Intel's 10-nanometer process and connecting with Fabs 12, 22, and 32 as a large integrated factory network.
The success did not erase the delay.
Fab 42 was originally associated with 14-nanometer production, then with a future 7-nanometer process, before opening on 10 nanometers. Those shifting labels reflected both the flexibility of an unequipped shell and Intel's broader difficulty turning process roadmaps into timely volume manufacturing.
The lesson cuts in both directions.
Building the shell early gave Intel an option: it could wait until demand and technology justified the equipment, then bring a modern fab online without starting from bare ground. The same option consumed billions before producing revenue and made the company's forecasting errors visible to workers, taxpayers, and investors.
The photograph records the operational result rather than the empty years.
Its wafers and cleanroom clothing make clear that Fab 42 did ultimately become productive, while the 2024 political visit shows how semiconductor capacity had become national industrial policy. Fab 42's good was patient, reusable infrastructure; its bad was the extraordinary cost of being early, wrong, or late.
The pin marks the public street address for Intel's active Ocotillo campus. Visitors should use public roads only and must not approach controlled cleanroom or construction areas.
Photo: Adam Schultz, official White House photograph, public domain, via Wikimedia Commons.
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