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COSEL is a world-renowned leader in the design and production of reliable, high-performance power conversion solutions.

Their product lineup includes AC-DC power supplies, DC-DC converters, power modules, and EMI filters.

COSEL is dedicated to providing cutting-edge technology that meets the evolving needs of various industries demanding precision and dependability.

COSEL, headquartered in Japan, boasts a global presence with facilities located worldwide


Cosel is one of the leading power supply manufacturers with a history of 50 years. Cosel manufactures high-quality AC-DC power supplies, DC-DC converters, power modules and EMI filters.

  • High Reliability by Unique Evaluation Techniques

  • Confidence in Our High Quality Product(5-10 Years Warranty)

  • On-site Techincal Support

  • Trustworthy Analytical Ability


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