Inductor component
View Patent ↗An inductor component is provided. The inductor component includes a core composed of a hollow core piece and a rod core piece, a bobbin, and bonded magnets. Regarding the hollow core piece and rod core piece, the rod core piece is arranged across the hollow core piece, and joining is performed between the bottom surfaces of both end portions of the rod core piece and the hollow core piece with bonded magnets therebetween.
1. An inductor component having a core comprising:
a hollow core piece; and
a rod core piece which is arranged across the hollow core piece;
wherein joining is performed between the hollow core piece and the bottom surfaces of both end portions of the rod core piece with bonded magnets therebetween; and
wherein the bonded magnet has a resisivity of 1 Ωcm or more and is formed from a resin; and
wherein the resin contains 30% by volume or more or rare-earth magnet powder having a Tc of 500° C. or more and an average particle diameter of 2.5 to 50 μm, has an intrinsic coercive force of 10 KOe or more, and is one selected from the group consisting of a polyimide resin, epoxy resin, poly(phenylene sulfide) resin, silicon resin, polyester resin, aromatic nylon, liquid crystal polymer resin, and a complex thereof.
2. The inductor component claimed in claim 1 , wherein a magnet powder of the bonded magnet is subjected to a surface treatment with a dispersing agent of a silane coupling agent or a titanium coupling agent prior to mixing with the resin.
3. The inductor component claimed in claim 2 , wherein the hollow core piece and the rod core piece are magnetic core pieces comprising MnZn-based or NiZn-based ferrite, silicon steel, or amorphous material.