| 2023 | April | Absorbed ELNA TOHOKU CO., LTD. |
|---|---|---|
| October | Absorbed TAIYO YUDEN ENERGY DEVICE CO., LTD. | |
| 2022 | January | Started production of conductive polymer hybrid aluminum electrolytic capacitors at the Shirakawa Factory |
| 2019 | January | Investment ratio of TAIYO YUDEN CO., LTD. changed to 100% |
| 2015 | February | Production and shipment of Conductive Polymer Hybrid Aluminum Electrolytic Capacitors started at the Aomori Plant |
| 2014 | January | Capital participation by TAIYO YUDEN CO., LTD. |
| 1995 | March | ELNA-SONIC SDN. BHD. (currently ELNA (MALAYSIA) SDN. BHD.) established in Penang, Malaysia |
| 1992 | July | Shirakawa Factory established in Nishishirakawa-gun, Fukushima Prefecture |
| 1980 | February | TANIN CONDENSER CO., LTD. (currently ELNA (THAILAND) CO., LTD.) established in Chiang Mai, Thailand |
| 1979 | October | ELNA TOHOKU CO., LTD. established in Kuroishi-shi, Aomori Prefecture |
| 1970 | June | Company name changed to ELNA CO., LTD. |
| 1934 | January | Started production of aluminum electrolytic capacitors |
| 1929 | July | Founded in Shinagawa-ku, Tokyo as the Honda Manufacturing Company |
