Cosel is one of the world’s leading manufacturers of switch mode AC-DC power supplies, DC-DC converters and EMI filters. Cosel has been manufacturing highly reliable products since 1969. With Cosel’s commitment to quality, reliability, customer service, and a very low field failure rate, Cosel has been the dependable choice for over 40 years.
Our state-of-the-art manufacturing facilities in Japan are ISO9001 and ISO14001 qualified utilizing TQM (Total Quality Management) systems. Cosel opened a new facility in Wuxi in China in 2011 to expand production capability. Our continued focus on quality has helped Cosel to achieve a field failure rate of less than 40ppm, which is much lower than the industry average. All Cosel Products meet international safety standards and comply with the RoHS Directive.
We strive to provide the highest level of service through our regional sales office, staffed with application engineers and power supply professionals, supported by our franchised Distributors and manufacture sales reps. Cosel offers industry-leading service, utilizing cellular manufacturing resulting in short lead times in the industry.
Cosel manufactures over 10,000 standards models of power products and EMI filters ranging from 1.5 watts to 10,000 watts. We offer a wide range of options and accessories for our products including conformal coating, low leakage current, low speed fans and much more.