[News] Huawei Faces Production Challenges with 20% Yield Rate for AI Chip

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Previously, Huawei claimed its second-generation AI chip “Ascend 910B” could compete with NVIDIA’s A100 and was working to replace NVIDIA, which holds over 90% of the market share in China. However, Huawei is now facing significant obstacles in expanding its production capacity. According to a report from ChosunBiz, the chip is being manufactured by China’s leading semiconductor foundry, SMIC, and has been in mass production for over half a year, yet the yield rate remains around 20%. Frequent equipment failures have severely limited production capacity.

The report on June 27 states that despite being in mass production for over half a year, SMIC’s manufacturing of the Ascend 910B is still facing challenges, as four out of five chips still have defects. Meanwhile, due to increased U.S. export restrictions, the supply of equipment parts has been disrupted, causing production output to fall far short of targets.

SMIC initially projected an annual production of 500,000 units for the Ascend 910B, but due to continuous equipment failures, this goal has not been met. Currently, SMIC is unable to introduce new equipment and has to retrofit low-performance Deep Ultraviolet (DUV) equipment to replace advanced Extreme Ultraviolet (EUV) equipment for etching the 7nm circuits of the AI chips.

Dutch photolithography giant ASML stated that using EUV equipment for 7nm processes requires only nine steps, whereas using DUV equipment requires 34 steps. More steps lead to higher production costs, higher defect rates, and more frequent equipment failures. Additionally, the U.S. has further restricted global equipment manufacturers from providing maintenance services within China.

Industry sources cited by the same report reveal that SMIC lacks engineers for maintaining and managing chip manufacturing equipment, and global equipment suppliers are hesitant to provide services to China due to U.S. sanctions. SMIC is currently using equipment and parts purchased before the U.S. sanctions to maintain its 7nm production line.

According to a previous report by The Information, major tech companies such as Alibaba, Baidu, ByteDance, and Tencent have also been instructed to reduce their spending on foreign-made chips like NVIDIA’s. The Chinese government, which is aggressively promoting its own data center projects, is said to be boosting demand for Huawei’s AI chips as well.

Previously, the Wall Street Journal reported in January that Huawei received pre-orders for at least 5,000 Ascend 910B chips from Chinese tech giants last year, with delivery expected this year.

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(Photo credit: Huawei)