Diatec, maker of FILCO keyboards, enters bankruptcy proceedings in Japan

FILCO’s future is now tied to a bankruptcy case, and that is bigger than one company’s collapse. For keyboard buyers, the immediate questions are simple: where FILCO boards will still be sold, who will handle repairs, and whether one of Japan’s most recognizable mechanical-keyboard names can stay alive after Diatec’s shutdown.

Diatec Corporation said on April 22, 2026 that it had ended business operations and that it had already deleted personal information collected through mail order and user support by that date. Eight days later, the Tokyo District Court had already issued a bankruptcy proceedings initiation decision, and Teikoku Databank reported the case on May 8. The sequence makes clear that this was not just a closure notice, but the formal beginning of insolvency proceedings for the company behind FILCO.

That matters because Diatec was not a narrow hobby label. Founded in June 1982, the company built its name around PC keyboards and sold wired and wireless models, numeric keypads, custom-made keyboards, replacement switches, wrist rests, maintenance supplies, and overseas brands. Its products moved through PC distributors, major electronics retailers, online retailers, and its own direct-sales website. In Japan’s mechanical-keyboard scene, Diatec was one of the rare bridges between mainstream consumer distribution and enthusiast-grade hardware.

The brand’s legacy is also unusually deep. FILCO has used genuine Cherry MX switches since 2004, and Diatec’s own listings included the Majestouch 3, Majestouch Convertible 3, Majestouch Xacro, and MINILA-R Convertible, along with keycap sets, wrist rests, and maintenance goods. That catalog helped make FILCO a familiar name long before hot-swap boards, gasket mounts, and VIA-compatible layouts became standard selling points elsewhere in the market.

The financial slide was real. Greenkeys cited sales of about 1.434 billion yen in fiscal 2016, falling to about 800 million yen in fiscal 2024. Weak sales in China, the fading of stay-at-home demand after COVID, and shrinking profitability all weighed on the business. For a brand with this much history, the numbers show how quickly the market can move past even established names.

There is, at least, one lifeline for existing owners. Diatec’s Taiwan manufacturing partner, / Koyou, said it would continue repair support and sales operations for FILCO products. That does not erase the shock of Diatec’s bankruptcy proceedings, but it does mean FILCO may continue under another structure even as its original Japanese maker exits the stage.