Panasonic says it may be two months before production can resume at a plant forced to halt operations due to Typhoon Hagibis.
Much of the equipment at the company's factory in the northern city of Koriyama was flooded. Water rose higher than a one-meter-high wall and flowed into the building.
The factory makes materials used in circuit boards for automobiles, mobile devices and other products.
Company officials say they're working to resume operations. But in the meantime, the Japanese electronics giant may shift production to another plant.
Officials are worried that a prolonged break in operations could affect parts supply networks and hold up output of other goods.