July 30, 2026 / SemiMedia / — Semiconductor, semiconductor-equipment and automotive manufacturers suspended production across Kumamoto and nearby areas after a magnitude 7.1 earthquake struck the Japanese prefecture on July 28.

After completing initial personnel and structural checks, companies are now inspecting production equipment, utility systems, work-in-process materials and regional logistics. The duration of these inspections will determine whether the disruption remains temporary or begins to affect component deliveries.

Sony Semiconductor Manufacturing’s Kumamoto Technology Center in Kikuyo Town has remained offline since the earthquake. The site is an important image-sensor manufacturing base, and Sony is still evaluating its buildings, manufacturing lines and supporting facilities.

Sony has not announced a production restart date. The company said no employees working at its affected manufacturing sites were injured.

Renesas Electronics suspended operations at its Kawajiri plant in Kumamoto City and Nishiki plant in Nishiki Town. Inspections have found fallen ceiling panels, cracks in walls and some water leakage.

The company has begun examining clean rooms and manufacturing equipment but has not disclosed which products were affected, whether work-in-process wafers were lost or when production will resume.

Tokyo Electron halted operations at two facilities in Kumamoto Prefecture. The semiconductor-equipment manufacturer has not identified major damage at the sites and is preparing to fully resume production from the beginning of next week.

EBARA Corporation stopped production at its Kumamoto factory in Nankan Town to inspect buildings and equipment. The facility manufactures semiconductor production equipment, including chemical mechanical planarization systems, and provides dry vacuum pump services.

After confirming the safety of the facility and its equipment, EBARA resumed normal operations on July 30. The company is continuing to assess the condition of its suppliers.

Mitsubishi Electric’s semiconductor-related operations in Kumamoto were also suspended for safety inspections. The affected regional manufacturing activities include power semiconductors and automotive electronic products.

TSMC’s Japan Advanced Semiconductor Manufacturing facility evacuated employees immediately after the earthquake. Structural inspections found the buildings safe, allowing personnel to return and production to begin gradually resuming.

Detailed inspections of JASM’s manufacturing equipment, facility systems and work-in-process wafers remain underway. Some construction activities at its second fab were also temporarily suspended because of aftershock risks.

An initial shutdown does not automatically indicate a prolonged chip shortage, while a restart announcement does not confirm that wafer output and customer deliveries have returned to normal. As an earlier assessment of the Kumamoto earthquake’s semiconductor supply risk noted, equipment displacement, recalibration requirements, work-in-process losses, utility inspections, logistics and repeated aftershocks will determine whether individual production lines remain offline for days or weeks.

Sony image sensors and Renesas automotive and industrial semiconductors currently face greater exposure because neither company has announced a firm production restart schedule.

The temporary shutdowns at Tokyo Electron and EBARA primarily affect semiconductor-equipment production, spare parts and field services. Their wider impact will depend on whether customer deliveries or support for other chip factories are delayed.

The disruption has also spread through the automotive supply chain. Honda suspended production at its Kumamoto motorcycle factory through July 31 while repairs are carried out on damaged parts of the facility.

Aisin, a major Toyota Group component supplier, halted its plant in Kumamoto City and began inspecting its production equipment.

Toyota Motor Kyushu briefly resumed production before suspending operations again at its Miyata, Kanda and Kokura plants in Fukuoka Prefecture. The three facilities are scheduled to remain offline through July 31 while Toyota evaluates supplier, logistics and safety conditions.

Nissan will partially suspend production at its Kyushu operations because earthquake-related disruption has delayed the delivery of some components.

Other manufacturers affected by the earthquake include Mitsubishi Chemical, Bridgestone and Tokai Carbon. Nippon Paper Industries’ Yatsushiro mill suffered severe damage after a chimney collapsed, disrupting operations at the site.

Kumamoto and the wider Kyushu region contain an interconnected manufacturing cluster covering wafer fabrication, image sensors, automotive semiconductors, power devices, semiconductor equipment, materials and vehicle production.