| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic admixture for encapsulation molding which applies a small load to a part arranged in a cavity, and to provide an inductor of such a structure as a magnetic core applied with a winding is sealed in that magnetic admixture. SOLUTION: A magnetic admixture produced by mixing and dispersing magnetic powder into thermosetting macromolecule such as epoxy resin is admixed with second macromolecule having a flexural modulus of 400 MPa or less. Consequently, fluidity of the magnetic admixture is enhanced, and a load can be reduced as applied to the magnetic core due to contraction incident to cooling process or curing reaction. Millable silicon rubber or ethylene-vinylacetate copolymer is preferably employed as the second macromolecule. COPYRIGHT: (C)2007,JPO&INPIT
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