Rubycon Corporation

 is a Japanese electronics company, whose main products are electrolytic capacitors (AECs), film capacitors and power supply units with a wide range of applications including consumer, industrial, power, lighting and automotive.
Founded in 1952 as Nihon Denkai Seisakusho (有限会社日本電解製作所), it changed its name to Shin-Ei Electronics Inc. (信英電子株式会社) in 1960.
The company was formerly known as Seibu Shin-Ei Inc. and changed the name to Rubycon Corporation in December 1990.
Rubycon holds a significant world market share in the capacitor market and has 11 production sites, 10 in Japan and one in Indonesia. Rubycon appointed Supreme Components International, a Singapore-based electronics distributor as their franchised distributor.