SIA Report: U.S. Chip Supply Chain Dependence on China Far Exceeds Surface-Level Data
nashnova research
A new SIA report reveals that measuring by production location instead of supplier headquarters, China's share of the U.S. chip supply chain jumps from 1% to 5% — and for certain critical rare earths, dependence on China exceeds 90%, exposing geographic risk the headline numbers hide.
Same suppliers — why does a different metric change the picture?
U.S. chipmakers spend roughly $27 billion a year on equipment and materials. By supplier headquarters, 95% comes from U.S., European, and Japanese firms; China accounts for just ~1%.
SIA re-ran the numbers by actual production location: the U.S.-Europe-Japan share drops from 95% to 68%, China rises from 1% to 5%, and Southeast Asia jumps from under 1% to 10%.
This means → many components branded as "American" or "Japanese" are actually manufactured in Chinese or Southeast Asian factories. Mapping the supply chain by corporate headquarters systematically hides real geographic concentration risk.
How concentrated is the rare-earth risk?
The report shows that for specific rare earths essential to chipmaking, China's supply share exceeds 90%.
In plain terms = chips cannot be made without rare earths, and over nine-tenths of the relevant capacity sits in China — not "some dependence," but near-zero alternative sourcing.
This reflects a critical vulnerability: the weakest link in America's semiconductor supply chain is not equipment or foundry capacity — it is upstream raw materials.
What does this mean for supply-chain diversification policy?
SIA's core move in this report is replacing the "headquarters" metric with a "production location" metric, redrawing the risk map of America's chip industry.
This means → if Washington wants to de-risk the supply chain, tracking a supplier's country of incorporation is not enough — policymakers must trace every component to its actual production site.
With rare-earth concentration above 90%, diversification policy faces a hard practical threshold: comparable alternative capacity simply does not exist in the near term.
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