Strong Earthquake Hits Kumamoto, Japan! How Will It Impact the Semiconductor Supply Chain?
A magnitude 7.1 earthquake struck Kumamoto Prefecture, Japan. As a major semiconductor hub, key companies such as Taiwan Semiconductor, Sony, and Renesas Electronics Corporation have been affected. Most companies have halted production for safety inspections, with no reports of casualties or substantial damage to facilities so far. Capital markets are closely monitoring the potential impact of this earthquake on the global automotive semiconductor supply chain, particularly the risk of disruption to Taiwan Semiconductor's mature process production lines
According to Xinhua News Agency, at approximately 16:27 local time (15:27 Beijing time) on July 28, a magnitude 7.1 earthquake occurred in Kumamoto Prefecture, Japan, with a maximum seismic intensity of 7 observed within the jurisdiction (the highest level in Japan's seismic intensity scale). The Japan Meteorological Agency issued a tsunami warning for coastal areas near the epicenter, predicting maximum wave heights of up to 1 meter.
Kumamoto Prefecture is a traditional semiconductor stronghold, hosting numerous companies across the semiconductor industry chain, including wafer fabs, equipment manufacturers, and material and component suppliers. In particular, leveraging the Taiwan Semiconductor Kumamoto plant and Sony's CMOS image sensor production base, the region has established a complete automotive semiconductor cluster.
It is understood that the core semiconductor enterprises in Kumamoto span three specific segments. In terms of wafer fabrication, these include the Taiwan Semiconductor Kumamoto joint venture (JASM), Sony Semiconductor Manufacturing SCK, Renesas Electronics Corporation's Kawashiri and Nishiki plants, and Mitsubishi Electric's Kumamoto power semiconductor plant. Semiconductor equipment companies include Tokyo Electron's (TEL) Kyushu plant, RORZE's Kyushu factory, and HORIBA ESTEC's Aso factory. Semiconductor material companies include Fujifilm's Kumamoto plant, Tokyo Ohka Kogyo (TOK), Taiyo Nippon Sanso, and Shin-Etsu Chemical.
Following the earthquake, capital markets have paid close attention to the impact on Kumamoto's local semiconductor supply chain. Based on public statements from various companies, most have voluntarily suspended operations to conduct safety inspections. There are currently no reports of injuries across all facilities, and no substantial damage to the main structures of the buildings has been reported.
For instance, a Taiwan Semiconductor spokesperson told the media that personnel at its Kumamoto factory had been evacuated outdoors. At this stage, it is impossible to determine the extent of damage to production facilities or the duration of production line interruptions. The measured seismic intensity in Kikuyo Town, Kumamoto Prefecture, where the Taiwan Semiconductor facility is located, was 5 Strong (on Japan's 10-level seismic intensity scale, 5 Strong is the 7th tier, under which most people find it difficult to stand and unsecured furniture may topple).
Public information shows that the Taiwan Semiconductor Kumamoto plant is located in Kikuyo Town, Kikuchi District. Plant 1 mass-produces 28/22nm and 16/12nm mature process automotive-grade chips, while Plant 2 is planned for 3nm advanced processes, with mass production expected in 2028. Sony Semiconductor Manufacturing SCK is located adjacent to the Taiwan Semiconductor facility.
Sony stated that it has evacuated factory employees and is currently assessing the situation. The company noted that its facilities have undergone multiple rounds of seismic reinforcement upgrades and can withstand seismic impacts of up to intensity 7. There are currently no casualties, and no structural damage has been reported.
In addition, Renesas Electronics Corporation has voluntarily suspended operations at its two plants in Kumamoto to check on personnel and facility safety. Mitsubishi Electric is evaluating the calibration time required to resume production. Tokyo Electron officially announced that it would suspend operations across all its plants for the entire day on July 29 to conduct systematic safety and equipment inspections.
Several industry insiders stated that Japan is located in the Circum-Pacific Seismic Belt, and Kumamoto Prefecture itself is a high-risk earthquake zone. Local semiconductor factories and precision machinery are equipped with high-standard seismic designs. The current production halts are primarily preventive maintenance shutdowns. The industry generally estimates that the inspection period will concentrate within 3-7 days, and the actual impact of this earthquake on the overall global semiconductor supply landscape is relatively limited.
Shanghai Securities News
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