- Bel, a driving force in the future of global connectivity, manufactures quality components for the computer, networking and telecommunications industries. Partnered with these markets' leaders, the Company engineers devices for those next-generation technologies which enable high-speed communication. Our ever-expanding portfolio, broadened by the acquisition of the Passive Components Group of Insilco Technologies, including InNet Technologies, Stewart Connector, TRP Connector B.V., Signal Transformer, and Cinch Connectors, now offers an even wider range of synergistic products. From circuit protection devices to power conversion modules...transformers to connector modules and integrated line interference components...design engineers and purchasing personnel alike benefit from Bel's extensive array of products and solutions.