Sintered ferrite body, chip inductor, and composite LC part
AssigneeTDK Corporation
InventorsHideo Watanabe, Yoichi Kanagawa, Takashi Suzuki, Takeshi Nomura
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Abstract
A ferrite composition comprising ferrite, borosilicate glass, and optionally boron oxide can be fired at a relatively low temperature of up to 950.degree. C. into a sintered body having improved mechanical strength and electromagnetic properties. The sintered ferrite body is used to form a chip inductor. The inductor is combined with a capacitor to form a composite LC part.
Claims18
A chip inductor comprising at least one ceramic magnetic layer and at least one internal conductor layer placed one on the other, said ceramic magnetic layer containing a ferrite and a borosilicate glass, wherein said borosilicate glass comprises about 25 to about 35% by weight based on the weight of the ceramic magnetic layer.
A chip inductor comprising at least one ceramic magnetic layer and at least one internal conductor layer placed one on the other, said ceramic magnetic layer containing a ferrite, a borosilicate glass, and boron oxide, wherein said borosilicate glass comprises about 25 to about 35% by weight based on the weight of the ceramic magnetic layer.
A composite LC part comprising
- a capacitor section including a ceramic dielectric layer and an electrode layer placed one on the other, and
- an inductor section including a ferrite magnetic layer and an internal conductor layer placed one on the other, said capacitor section being integrated with said inductor section,
- said ceramic magnetic layer containing a ferrite and a borosilicate glass, wherein said borosilicate glass comprises about 25 to about 35% by weight based on the weight of the ceramic magnetic layer.
A composite LC part comprising:
- a capacitor section including a ceramic dielectric layer and an electrode layer placed on the other, and
- an inductor section including a ferrite magnetic layer and an internal conductor layer placed one on the other, said capacitor section being integrated with said inductor section,
- said ceramic magnetic layer containing a ferrite, a borosilicate glass, and boron oxide, wherein said borosilicate glass comprises about 25 to about 35% by weight based on the weight of the ceramic magnetic layer.
Dependencies are inferred from the claim text.