BEL Fuse Inc. BELFA

What this company does

Bel Fuse Inc. designs, manufactures and markets a broad array of products that power, protect and connect electronic circuits. On December 31, 2025, it employed approximately 4,964 associates, almost all of which were full-time, across 15 countries, with 32% located within North America. In 2025, no direct customer accounted for more than 10% of its consolidated net sales, though there were key customers and end markets within each of its three product groups. It groups its products into Power Solutions & Protection, which represented 53% of net sales in 2025, Connectivity Solutions, 34%, and Magnetic Solutions, 13%. It offers a line of high speed and harsh-environment copper and optical fiber connectors and integrated assemblies, providing connectivity for applications across industries including commercial aerospace, military communications, defense, network infrastructure and structured building cabling. Its Power Transformers include standard and custom designs for use in a wide array of applications, including industrial instrumentation, alarm and security systems, motion control, elevators, and medical products. The Company was incorporated in 1949 and is organized under New Jersey law.

Written from the business description in BEL FUSE INC /NJ's annual report to the U.S. Securities and Exchange Commission, filed 24 February 2026. Every sentence was checked against that document before publication.