Cosel Co., Ltd., founded in 1969 and headquartered in Toyama, Japan, is a globally recognized manufacturer specializing in high-reliability switching power supplies and DC-DC converters. The company’s core business covers the design, development, production, and sales of power supply units and related EMI/EMC noise filters. Cosel offers an extensive product portfolio including AC-DC enclosed power supplies (LFA, LEA, LEP series), open frame power supplies (LOP, LHP series), and DIN rail mount power supplies (ADA series). Its DC-DC converter lineup features isolated board mount types (MGFW, BRFS series) and non-isolated point-of-load modules (BRDS, BSU series). Cosel also provides specialized high-voltage power supplies and a range of noise filters (NAC, FTA series) to ensure electromagnetic compatibility. Renowned for ultra-high efficiency, compact design, and long-term reliability, Cosel products serve demanding applications in industrial automation, medical equipment, telecommunications, and test & measurement. With a strong global presence through subsidiaries like Cosel Asia Co., Ltd., the company supports markets across Japan, Asia, Europe, and the Americas. Cosel holds a leading market position in Japan's industrial power supply segment and is among the top global suppliers of standard switching power supplies, consistently emphasizing quality, innovation, and customer-oriented solutions.