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Wire wound electronic component

  • US 6,198,373 B1
  • Filed: 08/07/1998
  • Issued: 03/06/2001
  • Est. Priority Date: 08/19/1997
  • Status: Expired due to Term
First Claim
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1. A wire wound electronic component, comprising:

  • a bobbin comprising a core with two ends, having a flange at each end, the flanges defining a recess between them;

    a coil of wire wound around the core between the flanges;

    a resin seal surrounding the coil between the flanges, said resin seal comprising;

    a first layer containing a first proportion of ferrite, and a second layer containing a second proportion of ferrite that is higher than said first proportion of ferrite, and powder of higher thermal conductivity than the resin;

    wherein the powder comprises ferrite, and the coefficient of thermal expansion of the resin seal is similar to that of the bobbin.

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