Companies / SMIC
Semiconductor foundry
SMIC
State of play as of
China’s largest chip foundry and the physical bottleneck of its AI build-out: the one line making leading-edge domestic AI chips, and not enough of it to go around.
Semiconductor Manufacturing International Corporation is China’s largest contract chipmaker, the foundry that turns designs from Huawei, Cambricon and others into physical silicon. It matters because it is where the export controls actually bite: not on finished chips, which Chinese firms now largely make themselves, but on the lithography equipment SMIC needs to build leading-edge capacity at volume. Its advanced line is the only one in China producing frontier AI chips at scale, and it cannot yet meet domestic demand. We track what SMIC can build, how much, and who gets it, with dates and sources, and we flag where the node and yield numbers are estimates rather than disclosures.
Fast facts
- What it is
- China’s largest semiconductor foundry, a contract chipmaker (it fabricates other firms’ chip designs). Listed in Hong Kong and on Shanghai’s STAR market; state-linked entities are among its largest shareholders.
- Founded
- 2000, Shanghai. Headquartered in Shanghai.
- Leading-edge line
- Its “N+2” process is the only line in China making leading-edge AI chips at scale. Independent teardowns describe it as roughly 7nm-class; SMIC does not disclose the node, and outside analysts note it runs on DUV rather than EUV lithography.tmtpost, via CAD; TechInsights (7nm teardown estimate)
- Capacity vs demand
- The N+2 line targets about 2.6 million AI chips in 2026 against domestic demand near 4.2 million, an estimated 40% gap, per a tmtpost breakdown.tmtpost, via CAD
- Who gets the wafers
- Huawei has locked about 43% of that advanced capacity on a five-year contract; Cambricon holds an estimated 9 to 11%; the rest is contested by Biren, Moore Threads and Alibaba’s T-Head.tmtpost, via CAD
- AI chip revenue
- SMIC’s AI and data-center chip revenue has been roughly flat at about $300 million a quarter for three years, per analyst Lennart Heim; over the same span TSMC’s equivalent share rose sharply.Lennart Heim, via CAD
- The constraint
- Chipmaking equipment, not chip access. Controls on lithography tools (ASML, Tokyo Electron) have held, capping how fast SMIC can add leading-edge capacity. Analysts put SMIC roughly three generations behind TSMC at the frontier.Lennart Heim, via CAD
The state of play
A tmtpost breakdown put hard numbers on the ceiling controls still impose. SMIC’s N+2 process, the only line in China making leading-edge AI chips at scale, targets about 2.6 million AI chips this year against domestic demand near 4.2 million, a roughly 40 percent gap. Huawei has locked about 43 percent of that capacity on a five-year contract, having embedded its HiSilicon team beside the line; Cambricon holds an estimated 9 to 11 percent, and Biren, Moore Threads and Alibaba’s T-Head fight over the rest. The scarce resource in China’s AI build-out is a place in line at this one fab. (The 2.6M and 4.2M figures are the analysis’s estimates, not SMIC disclosures.)
Analyst Lennart Heim published a breakdown showing SMIC’s AI and data-center chip revenue has stayed roughly flat at about $300 million a quarter for three years, while TSMC’s equivalent high-performance-computing share rose over the same period. His argument: the export controls that have actually bitten are on chipmaking equipment, not on chip access, which has been porous. SMIC cannot build leading-edge capacity at volume because it cannot get the lithography tools. That ceiling is real; the counter-case, also real, is that China can win the inference layer without closing the fabrication gap.
SMIC secured approval to acquire full ownership of SMIC North, its most strategic 12-inch wafer fab and the key production site for its advanced-process push, for roughly $5.9 billion, the largest domestic wafer-foundry deal in Chinese history. The state Big Fund (the National Integrated Circuit Industry Investment Fund), which had held 49% of SMIC North, took SMIC shares as consideration rather than cash. The consolidation put SMIC’s flagship leading-edge capacity under 100% domestic ownership, the same institutional treatment the state gave DeepSeek’s round the same week.
Our reporting on SMIC
- The Windfall
A Chinese memory middleman’s half-year profit jumped 743x. AI’s appetite for HBM is being paid for one layer down, by the budget phone in your pocket.
- The Direction, Not the Floor
SMIC’s AI and data-center chip revenue has been flat at roughly 300 million dollars a quarter for three years. The binding constraint is chipmaking equipment, not chip access.
- The Boarding
The full Nvidia-to-China chip sequence, from the A800 and H800 to the H20 halt and a 4.5 billion dollar write-off, one of the largest write-downs in semiconductor history.
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Common questions
What is SMIC?
SMIC (Semiconductor Manufacturing International Corporation) is China’s largest contract chip foundry, founded in 2000 and based in Shanghai. It fabricates chip designs for firms like Huawei and Cambricon, and its advanced “N+2” line is the only one in China producing leading-edge AI chips at scale. It is listed in Hong Kong and on Shanghai’s STAR market, with state-linked entities among its largest shareholders.
What process node is SMIC on?
SMIC does not officially disclose the node of its most advanced line, which it calls N+2. Independent teardowns, notably by TechInsights, have described SMIC’s leading-edge chips as roughly 7nm-class, produced using older DUV lithography rather than the EUV tools SMIC is barred from importing. Treat specific nanometer figures as outside estimates, not company disclosures; analysts generally place SMIC around three generations behind TSMC at the frontier.
Why can’t SMIC make enough advanced AI chips?
The binding constraint is chipmaking equipment, not chip designs. US-led export controls on advanced lithography tools from ASML and Tokyo Electron have held, capping how fast SMIC can add leading-edge capacity. A July 2026 tmtpost analysis estimated its advanced N+2 line can make about 2.6 million AI chips this year against domestic demand near 4.2 million, roughly a 40 percent gap. Those volume figures are analyst estimates.
Who gets SMIC’s advanced chip capacity?
Per a tmtpost breakdown carried by CAD, Huawei has locked about 43 percent of SMIC’s advanced N+2 capacity on a five-year contract, having embedded its HiSilicon team beside the line. Cambricon holds an estimated 9 to 11 percent, backed by its Beijing state ties, and the remainder is contested by Biren, Moore Threads and Alibaba’s T-Head. Allocation is set as much by national and provincial priority as by chip quality.
What was the SMIC North acquisition?
In May 2026 SMIC secured approval to acquire full ownership of SMIC North, its most strategic 12-inch wafer fab, for about $5.9 billion, the largest domestic wafer-foundry deal in Chinese history, per TechNode. The state Big Fund, which had held 49 percent of the fab, took SMIC shares as consideration. The deal put SMIC’s flagship leading-edge capacity under 100 percent domestic ownership.
Every dated fact above traces to a named source, and where it comes from our reporting, to the dated issue that carried it. Where a claim is self-reported or disputed, we say so.