CUSTOM MAGNETICS OF CALIFORNIA INC

Custom Magnetics of California Inc. specializes in the design and manufacturing of high-voltage specialty transformers for mission-critical defense applications. Their technical expertise centers on custom power conversion systems, particularly the fabrication of oil-immersed and dry-type transformers rated for high-voltage industrial environments, including 4160V to 450V configurations. The company demonstrates precision engineering in electromagnetic core design, winding techniques, thermal management, and compliance with military-grade insulation and dielectric standards. Their capability is distinguished by the ability to deliver compact, robust transformers that meet stringent environmental and operational requirements under DO-160 and MIL-STD-461 specifications, ensuring reliability in rugged, high-interference settings typical of military platforms. The contractor has delivered products exclusively to the Department of Defense, indicating a focused relationship with defense procurement channels. Their work supports equipment requiring stable, isolated power in field-deployed systems, such as radar, communications, and avionics infrastructure, where transformer performance directly impacts system uptime and electromagnetic compatibility. The primary NAICS code 335311 reflects deep specialization in power and specialty transformer manufacturing, placing the company within the defense industrial base for critical electrical infrastructure. This vertical is characterized by low-volume, high-complexity production runs tailored to unique military specifications, distinguishing Custom Magnetics from general-purpose transformer vendors. As a small business structured as a 2L entity, Custom Magnetics of California Inc. operates from its facility in Chino, California, with no federal certifications on record. The company’s market positioning is that of a niche supplier with domain-specific engineering capabilities, serving defense contractors and government integrators who require custom magnetic components with verified performance in high-stress operational environments.