Why a $20 Billion Fab Is the Price of Moore's Law
How to Build a $20B Semiconductor Fab (2024)
Semiconductors have shrunk from $2.50 per transistor in 1954 to a fraction of a cent today, but the factories that make them have exploded in cost—from $4 million in the 1970s to $20 billion now. This piece explains the four core operations—layering, patterning, doping, and heating—and why the extreme precision needed for 50-nanometer features forces fabs to become some of the most complex and expensive factories on Earth.
The same shrinking and cheapening has happened for every semiconductor component. But at the same time, the facilities to manufacture them have become increasingly expensive.
- bob1029
> When semiconductors were being researched at Bell Labs in the 1940s, mysterious component failures were eventually traced to researchers who had touched copper door knobs; the tiny number of copper atoms that migrated from the door to the workers hands was enough to ruin their work material.
Copper is incredibly destructive when it's in the wrong part of the fab. It's such a problem that most manufacturers typically separate it across physical cleanroom boundaries and use things like skybridges to move the wafers from one to the other. Once a lot touches the copper area, there's no coming back. It's basically a zombie virus.
- ninju
Impressive level of engineering for modern fabs
- morninglight
Ireland doesn't offer the political roadblocks that the US currently faces.
Until that changes, progress will continue to be slow in this country.
https://spectrumnews1.com/oh/columbus/news/2025/02/28/intel-...