Bel Fuse Inc /Nj (NASDAQ: BELFB)

Bel Fuse Inc. designs, manufactures and markets a broad array of products that power, protect and connect electronic circuits for defense, commercial aerospace, networking, telecommunications, computing, general industrial, high speed data transmission, transportation and eMobility industries, as well as automotive, medical, broadcasting and consumer electronics markets.

The company generates revenue primarily through the sale of its products, which are organized into Power Solutions and Protection (53% of net sales in 2025), Connectivity Solutions (34% of net sales in 2025), and Magnetic Solutions (13% of net sales in 2025), sold via strategic account managers, regional sales managers working with independent sales representatives, and authorized distributors worldwide.

The company operates through the following segments: Power Solutions and Protection, Connectivity Solutions, Magnetic Solutions.

• Power Solutions and Protection: This segment provides front end, board mount, industrial and transportation power products, module products and circuit protection, including AC/DC power supplies, DC/DC converters, DC/AC inverters, surface mount and through hole fuses and Polymeric PTC devices, serving aerospace, defense, servers, storage, networking, transportation, harsh environment, consumer, medical and industrial markets.

• Connectivity Solutions: This segment offers expanded beam fiber optic connectors, copper based and RF connectors, cable assemblies and harsh environment circular connectors for military/aerospace, space, oil and gas, broadcast, communications, radar, avionics, smart munitions, industrial equipment, Ethernet, I/O, industrial and power connectivity applications such as routers, hubs, switches, peripheral devices and patch panels.

• Magnetic Solutions: This segment supplies integrated connector modules, power transformers, power inductors and discrete components for network switches, routers, hubs, PCs in Gigabit Ethernet and PoE applications, power supplies, alarm, fire detection, security systems, HVAC, lighting, medical equipment, and signal SMD power inductors and SMPS transformers used in analog circuitry, switchmode power supplies, DC/DC converters, LED lighting, automotive and consumer electronics.

Bel Fuse Inc. holds a competitive position in the highly fragmented electronic components industry, leveraging its broad product line, technological innovation, global manufacturing footprint and strong customer relationships to differentiate itself from numerous independent competitors and divisions of larger corporations.

The company serves a diverse customer base across defense, aerospace, telecommunications, networking, computing, industrial, transportation, eMobility, automotive, medical, broadcasting and consumer electronics sectors, with no single customer accounting for more than 10% of consolidated net sales in 2025.