CSI Technologies, Inc.
CSI Technologies, Inc. is a California-based manufacturer of high-voltage capacitors, specializing in pulse power and high-energy-density designs for demanding applications.
Last updated September 26, 2026
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Overview
CSI Technologies, Inc. is an American electronic component manufacturer based in Vista, California, specializing in high-voltage capacitors. Founded in 1969 as Capacitor Specialist Incorporated, the company later changed its name to CSI Technologies, Inc. and has since built a reputation as a leader in high-voltage capacitor manufacturing, with a particular emphasis on pulse power and high energy density for long-life applications. The company produces a range of capacitor types, including defibrillator capacitors, DC filter capacitors, metal case capacitors, plastic case capacitors, and power factor correction capacitors. CSI Technologies also offers custom design services for demanding applications, leveraging state-of-the-art energy densities. Its products are used in applications requiring voltages from 500 to 250,000 volts. CSI Technologies has invested significantly in improving the quality and performance of its high-voltage capacitors, both metalized film and film/foil types. The company's mission is to provide efficient and cost-effective capacitors while maintaining leadership in the field. Its staff is described as experienced and qualified to support customer demands. As a privately held company, CSI Technologies operates from its headquarters in Vista, California, and serves customers in the United States and internationally. The company provides downloadable catalogs (Blue, Green, Red) and maintains a gallery of its products on its website.
History
CSI Technologies, Inc. was founded in 1969 under the name Capacitor Specialist Incorporated. From its inception, the company focused on manufacturing high-voltage capacitors, with a particular emphasis on pulse power and high energy density for long-life applications. Over the years, the company changed its name to CSI Technologies, Inc. and continued to develop its expertise in the field. In more recent years, CSI has invested significant capital to improve the quality and performance of its high-voltage capacitors, both metalized film capacitors and film/foil capacitors. A key factor in the company's success has been its ability to develop custom designs for demanding applications with state-of-the-art energy densities. The company's mission is to provide the most efficient and cost-effective capacitors on the market and to continue its leadership in the field. Today, CSI Technologies operates from its headquarters in Vista, California, and serves customers across the United States and internationally. The company offers a range of standard and custom capacitor products, including defibrillator capacitors, DC filter capacitors, metal case capacitors, plastic case capacitors, and power factor correction capacitors. It also provides downloadable catalogs and maintains a gallery of its products on its website.
- 1969
Founded as Capacitor Specialist Incorporated.
Name changed to CSI Technologies, Inc.
Invested significant capital to improve quality and performance of high-voltage capacitors.
Products and positioning
Leader in high-voltage capacitor manufacturing with emphasis on pulse power and high energy density for long life.
Defibrillator Capacitor
DC Filter Capacitor
Metal Case Capacitors
Plastic Case Capacitors
Power Factor Correction Capacitor
Metalized Film Capacitors
Film/Foil Capacitors
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