| 1945 | Founded Izumi Shokai. Began retail and wholesale of electrical equipment and devices. |
| 1947 | Incorporated Izumi Denki Co., Ltd. (Chuo-ku, Osaka). Began manufacture and sales of switches. |
| 1956 | Moved the Head Office to Kita-ku, Osaka. Opened Osaka Office in Yodogawa-ku, Osaka and began operations. |
| 1958 | Began manufacture and sales of industrial switches, pilot lights and terminal blocks. |
| 1969 | Opened Kyoto Plant in Nagaokakyo City, Kyoto and began operations. Moved the Head Office to Yodogawa-ku, Osaka. |
| 1973 | Established IZUMI SEIKI TAIWAN CO, Ltd (Taiwan) |
| 1975 | Established IDEC CORPORATION (California, U.S.A.) |
| 1976 | Established IDEC Elektrotechnik GmbH (Hamburg, Germany). |
| 1982 | Created a new corporate identity and the IDEC trademark and changed English corporate name. Listed stock in the Second Section of Osaka Securities Exchange. |
| 1983 | IDEC IZUMI TAIWAN CORPORATION (Taiwan) |
| 1984 | Opened Fukusaki Plant in Kanzaki-gun, Hyogo and began operations. Moved the Head Office to new location in Yodogawa-ku, Osaka. |
| 1987 | Established IDEC Electronics Limited(UK) |
| 1989 | Listed stock in Second Section of the Tokyo Stock Exchange. Completed first phase of Takino Plant construction (Kato City, Hyogo Pref.). |
| 1990 | Stock listing upgraded from Second Section to First Section of Tokyo and Osaka Stock Exchanges. |
| 1991 | Completed first phase of Tsukuba Plant construction (Ryugasaki City, Ibaraki Pref.) |
| 1992 | Established IDEC TAIWAN CORPORATION( Taiwan) . Opened IDEC Technology Research Center in Yodogawa-ku, Osaka. |
| 1994 | Opened Hamamatsu Distribution Center in Hamamatsu City, Shizuoka and began operations. Moved the Head Office to new location in Yodogawa-ku, Osaka. |
| 1995 | Established IDEC IZUMI(H.K.) Co., Ltd.(Hong Kong, China) |
| 1998 | Opened Tatsuno Distribution Center in Tatsuno City, Hyogo and began operations. Opened Tokyo Head Office in Minato-ku, Tokyo and moved Tokyo Office into that head office. |
| 2000 | Established IDEC IZUMI ASIA PTE LTD.( Singapore). |
| 2002 | Established IDEC IZUMI SUZHOU CO., LTD.( Suzhou, China). Established IDEC( SHANGHAI) CORPORATION( Shanghai, China). |
| 2004 | Established IDEC IZUMI( H.K.) Co., Ltd. (Hong Kong, China) . Made IDEC HONG KONG CO., LTD. a holding company. Reduced number of shares comprising the minimum stock trading unit. |
| 2005 | Changed names and logos. |
| 2006 | Established IDEC( BEIJING) CORPORATION( Beijing, China). |
| 2012 | Established IDEC ASIA ( THAILAND) CO,LTD. |
| 2013 | Opened the New Head Office in Yodogawa-ku, Osaka. Completed the Amagasaki Plant and moved the Kyoto Plant's production functions there. Made IDEC DATALOGIC Co., Ltd. a wholly-owned subsidiary and changed trade name to IDEC AUTO-ID SOLUTIONS CORPORATION. |
| 2014 | Established IDEC ELECTRONICS TECHNOLOGY (SHANGHAI) CORPORATION. Made CONET CO., LTD. a wholly-owned subsidiary. (current IDEC FACTORY SOLUTIONS CORPORATION) |
| 2017 | Made MMI Technologies and APEM SAS a wholly-owned subsidiary. (current APEM Group) Made Welcat Inc. a wholly-owned subsidiary. (Welcat Inc. joined IDEC AUTO-ID SOLUTIONS in a merger in 2020) |
| 2018 | Made TOKYO SENSOR CO., LTD. a wholly-owned subsidiary. |
| 2020 | Established IDEC CONTROLS INDIA PRIVATE LIMITED |