Bel Fuse Inc., together with its subsidiaries, designs, manufactures, and sells electronic products used in networking, telecommunications, high speed data transmission, and consumer electronics. Its magnetics products comprise discrete components, including transformers and common mode chokes that are used in networking, telecommunications, and broadband applications; diplexer and triplexer filters, which are used in high speed and home networking applications; power transformer products that are used in alarm, security, and medical products; and MagJack integrated connector modules used in signal conditioning, electromagnetic interference suppression, and signal isolation applications. The company's power conversion products comprise isolated and non-isolated DC-DC converters, which are used in power low voltage silicon devices, data networking equipment, distributed power architecture, and telecommunication devices, as well as computers and peripherals; and integrated modules to support data transmission over existing power lines. Its circuit protection products include miniature, micro, and surface mount fuses; polymeric positive temperature coefficient devices, which are used in electronic and telecommunication markets; and circuit protection devices that are used in televisions, consumer electronics, power supplies, computers, telephones, and networking equipment. The company's modular connectors comprise RJ45 and RJ11 passive jacks, plugs, and cable assemblies that are used in networking equipment, such as routers, hubs, switches, and patch panels. The company sells its products through direct strategic account managers, regional sales managers working with sales representative organizations, and authorized distributors to customers in North America, Europe, and Asia. Bel Fuse Inc. was founded in 1949 and is headquartered in Jersey City, New Jersey.