BELFA

Bel Fuse Inc /nj

A maker of power, protection, and connectivity components for networking, aerospace, defense, and industrial gear, Bel Fuse builds products like the MagJack Ethernet connector and circuit protection devices. Founded in 1949 by Elliot Bernstein in Jersey City, it began by making fuses for cars and televisions — the name literally reflects that fuse-making start. Its MagJack connector packs the magnetics right into the Ethernet port, a design that became a networking staple.