SMIC used DUV lithography, not EUV, for its 7nm chip, which isn't a breakthrough but does show progress and reaffirms China's commitment to domestic production
Chris Miller / Financial Times : Mastodon: @valeg@mastodon.social . X: @soft_fox_lad , @crmiller1 , and @fletcherschool . Forums: Beehaw Mastodon: Monsieur Valentine / @valeg@mastodon.social : @Techmeme explains such a limited release of the phone. DUV is not economical, low yield. But it's sufficient for propaganda. X: @soft_fox_lad : asml selling smic duv equipment remains utterly beyond my comprehension just a complete failure of governance with profound implications for global security Chris Miller / @crmiller1 : What the most ‘Chinese’ smartphone yet tells us about politics. My latest for the @FinancialTimes @fletcherschool : “If the Chinese market looks lost, American companies have no reason to lobby for access to it,” writes Professor @crmiller in his latest piece for @FT. https://www.ft.com/... Forums: Neptune To / Beehaw : What the most ‘Chinese’ smartphone yet tells us about politicsTimes
Context & Ripple Effects
SMIC's progress follows earlier reporting that its 7nm effort faced low yields without EUV, making manufacturing scale—not merely reaching the node—the central test. The subsequent appearance of the chip in Huawei's Mate 60 Pro was also characterized as an evolutionary step rather than a wholesale technological leap: early 7nm yield concerns and the Mate 60 Pro’s domestically made chip frame this as incremental capability-building.
The significance is therefore strategic as much as technical: China can continue advancing production know-how with equipment that is less capable than EUV, even if the resulting process is costly and difficult to scale.
First-order effects
- SMIC demonstrates a route to produce 7nm-class chips with DUV tools, expanding its process capability without EUV access.
- Low-yield, uneconomic production constrains the immediate impact: the result supports limited supply and learning, rather than proving competitive high-volume manufacturing.
Second-order effects
- The result puts greater emphasis on DUV equipment, process tuning, and manufacturing expertise as practical bottlenecks for China's chip supply chain—not just access to the newest lithography tools.
- Export-control policymakers and equipment suppliers face a harder distinction between restricting leading-edge tools and limiting what installed or older-generation equipment can achieve through retooling.
Third-order effects
- If SMIC can steadily improve yields, advanced-node access may become a question of time, cost, and production scale rather than a binary EUV-access threshold.
- The broader industry could become more regionally bifurcated: a domestically supported Chinese supply chain optimized for resilience may coexist with a frontier supply chain centered on the most advanced tools.
The trend: This is one data point in the shift from dependence on frontier imported equipment toward slower, state-backed accumulation of domestic semiconductor manufacturing capability.