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Establishment of Okita Manufacturing Co., Ltd.
New factory established in Iida City, Nagano Prefecture; launch of small and large lead relays.
Launch of high-insulation, low-floating-capacity lead relays with guard terminals.
Launch of intrinsically safe explosion-proof lead relays.
Launch of DIP-type lead relays.
Launch of low-thermal-emf lead relays.
Launch of SIP-type lead relays.
Launch of mercury relays.
Launch of ultra-miniature high-frequency relays.
Launch of high-current mercury relays.
Launch of relay sockets.
Launch of high-frequency coaxial relays.
Launch of LED-equipped lead relays.
Launch of high-speed pulse transmission lead relays.
Launch of programmable attenuators.
Launch of photo-DMOS-FET relays.
Launch of SMD lead relays.
Start of sales of small lead relays.
ISO 9001 certification obtained.
Start of sales of low CR (8.3pF·Ω) photo DMOS-FET relay AB50S.
Start of sales of high-temperature compatible relays.
Development of small stand-type LED lead relays (1A, 2A, 1C types).
Development of ultra-small SMD lead relays for high frequency (U100, 8-pin type).
Development of ultra-small stand-type lead relay (GN-100S, 1A type).
Start of sales of SMD-type transfer relays.
Start of sales of small (HFS) type relay with 1500V voltage rating.
Start of sales of stand-type relay with 5A current rating.
Start of sales of dry relay with 40A current rating.
Start of sales of PCB-type relay with 2500V voltage rating.
Start of sales of ultra-small transfer-type high-temperature compatible relay.
Start of sales of ultra-small 2-coil LED relay.
Start of sales of tube-type high-insulation 15×Ω relay.
Start of sales of ultra-small high-insulation 13×Ω relay.
Start of sales of lead relay 6-mech with 60A current rating.
Website renewal.
Okita Manufacturing Co., Ltd. has notified that it will be temporarily closed on Thursday, November 5, 2026, in the afternoon, and on Friday, November 6, 2026. During the closure period, inquiries will be accepted via the website form, and a representative will contact you after Monday, November 9.
We will be closed on Monday, November 2. Please submit your requests via the inquiry form on our website. Contact from the staff will be after Wednesday, November 4.
Okita Manufacturing Co., Ltd. has notified that it will be temporarily closed on Tuesday, October 27, 2026. Please contact us via the inquiry form on our website, and a representative will get in touch after October 28. We apologize for any inconvenience and thank you for your understanding.
Due to the lack of mercury switches in stock and no foreseeable future supply, we are discontinuing the production of mercury relays. We do not handle the collection of mercury relays, so we advise following the disposal rules of each local government.
Due to the planned reconstruction of the building we occupy, we have relocated our headquarters. The new address is 7F, Ichigo Shibuya Dogenzaka Building, 28-3 Enyamacho, Shibuya-ku, Tokyo 150-0044. There are no changes to the telephone or fax numbers.
Okita Manufacturing Co., Ltd. will be closed on Tuesday, October 20, 2026. Requests should be made via the inquiry form on the website, and contact from the responsible person will be after Wednesday, October 21.