US has ordered Taiwan's TSMC to halt advanced chip shipments to Chinese customers
Move could benefit China's chipmaking efforts over longer term-analysts
CSI Semiconductor Index jumps 6% during trading on Monday, SMIC shares up 4%
SHANGHAI, Nov 11 (Reuters) - China's semiconductor index leapt close to a three-year high on Monday on bets a U.S. order halting Taiwan Semiconductor Manufacturing Co's 2330.TW shipments of advanced chips to Chinese customers could accelerate Beijing's self-reliance efforts.
TSMC will from Monday suspend shipments of certain sophisticated chips to some Chinese clients after receiving a letter from the U.S. Department of Commerce imposing export restrictions on those products, Reuters reported on Sunday.
Analysts said that while the move might lead to some short-term pain for Chinese firms involved in designing chips for artificial intelligence accelerators and graphics processing units, it could benefit the domestic chipmaking sector as companies would have few alternatives.
The CSI Semiconductor Index .CSI931865 jumped more than 6% during trading on Monday to the highest since Dec. 20, 2021, while the CSI Integrated Circuits Index .CSI932087 rose 5%. Shares in SMIC 0981.HK, China's largest foundry and the country's main alternative to TSMC, rose more than 4%.
"In the medium and long term it will force the reorganization of the supply chain, increase the demand for domestic advanced process production capacity, and promote technological breakthroughs in upstream semiconductor equipment and materials," Chinese brokerage Cinda Securities said in a note published on Sunday.
Several Chinese technology firms and chip designers have in recent years sought to design their own advanced processors after the U.S. sanctioned Huawei Technologies HWT.UL and barred the likes of Nvidia NVDA.O and AMD AMD.O from selling their most sophisticated chips to China.
Many rely on Taiwan-based TSMC, the world's leading contract chipmaker, for production. In the third quarter, 11% of TSMC's revenue came from China, the company said.
The U.S. imposed export restrictions on TSMC chips of 7 nanometre or more advanced designs, Reuters reported.
The only foundry in China capable of producing chips at the 7 nm process node is SMIC, which is known for helping Huawei produce chips used in its latest smartphones, including the Mate 60 and Pura 70.
Analysts said SMIC has been making such advanced chips using equipment supplied by companies like the Netherlands' ASML ASML.AS and U.S.-based Applied Materials AMAT.O, which it managed to stockpile before U.S. sanctions took effect.
However, SMIC has faced difficulties in ramping up production due to U.S. export controls barring it from purchasing equipment necessary for advanced chip manufacturing, while domestic alternatives are not yet ready for the effort.
Reuters reported in February that due to manufacturing constraints, SMIC has had to prioritise producing AI chips for Huawei over smartphone chips, as the former is seen as more strategically important.
(Reporting by Shanghai and Beijing newsrooms; Editing by Jamie Freed)
((brenda.goh@thomsonreuters.com; +86 (0) 21 2083 0088; Reuters Messaging: brenda.goh.thomsonreuters.com@reuters.net))
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