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Bel Fuse Inc


BELFA: Bel Fuse Inc designs and manufactures electronic components that protect and connect electronic circuits. Its product portfolio is divided into three categories: magnetic solutions, power solutions & protection, and connectivity solutions. These products are used for the computer, networking, telecommunications, transportation and defense/aerospace, automotive, medical, and consumer electronics industries. Its geographical segments are the United States, Macao, United Kingdom, Slovakia, Germany, Switzerland, and All other foreign countries. Majority of the revenue is derived from United States.


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  • Patent Title: Power supply with auxiliary converter for extended input voltage range Aug. 25, 2020
  • Patent Title: Hybrid dc-dc converter Aug. 25, 2020
  • Patent Title: Power switch with power harvesting for local controller Aug. 18, 2020
  • Patent Title: Filter inductor for heavy-current application May. 05, 2020
  • Patent Title: Power inductor Jan. 21, 2020
  • Patent Title: Modular plug connector with multilayer pcb for very high speed applications Jan. 07, 2020
  • Patent Title: Modular connector plug for high speed data transmission networks Oct. 08, 2019
  • Patent Title: Modular jack connector with offset circuitry for controlled capacitance compensation Sep. 24, 2019
  • Patent Title: Modular jack connector with offset circuitry for controlled capacitance compensation Jul. 23, 2019
  • Patent Title: Configurable led power supply with wireless interface Apr. 30, 2019
  • Patent Title: Switching power supply startup circuit with normally on device providing startup charging current Aug. 22, 2017
  • Patent Title: Switch-mode power supply with temperature and current sharing Dec. 06, 2016
  • Patent Title: Network interface connector with proximity compensation Nov. 22, 2016
  • Patent Title: Switching power supply startup circuit having normally on emitter-switched current source May. 10, 2016
  • Patent Title: Droop current sharing power converter with controlled transitions between regulation set points Nov. 03, 2015
  • Patent Title: Power supply having selectable operation based on communications with load Sep. 01, 2015
  • Patent Title: Distributed power supply system with digital power manager providing digital closed-loop power control Dec. 02, 2014
  • Patent Title: Dc-to-dc converter having secondary-side digital sensing and control Nov. 12, 2013
  • Patent Title: Led ballast power supply having digital controller Mar. 12, 2013
  • Patent Title: Electrical isolation device capable of limiting magnetic saturation even upon receipt of high power d.c. bias and, method for making the same and connector incorporating the same Dec. 13, 2011
  • Patent Title: Modular connector plug having a wire guide filter with an impedance containing portion and a cable guide portion Oct. 11, 2011
  • Patent Title: Differential electrical surge protection within a lan magnetics interface circuit Oct. 05, 2010
  • Patent Title: High speed data plug and method for assembly Jul. 13, 2010
  • Patent Title: Multiport rj connector May. 18, 2010
  • Patent Title: High speed modular jack with flexible compensation circuit Mar. 30, 2010
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