Taiyo Yuden Co., Ltd.

Shoichi Tosaka

Manabu Takayama

Ikuo Kakiuchi

Toshimitsu Honda

Takashige Shiga

Masaru Maeda

Tadahiko Yamada

Kazuji Onikata

A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a resistance film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the resistance film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the resistance film and such that an external shape the armor is a quadric prism shape; and a pair of external electrodes that are formed in a substantially equal thickness so as to cover surfaces of portions present on an end face and four sides of the respective quadric prism segments of the resistance film.

Noise rejection device and cellular phone including the noise rejection device

A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a conductor film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the conductor film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the conductor film and such that an external shape the armor is a quadric prism shape; and a pair of external electrodes that are formed in a substantially equal thickness so as to cover surfaces of portions present on an end face and four sides of the respective quadric prism segments of the conductor film.

A fixed chip resistor or a thick-film electrical resistor provided in circuit boards and the like and, an electrical resistor obtained by sintering in a non-oxidizing atmosphere, resistance pastes for producing an electrical resistor and a method for making such resistors. The aforesaid objects are achieved by the provision of an electrical resistor obtained using at least one molybdate belonging to the following groups (A) and (G) and glass,

Electrical resistors, electrical resistor paste and method for making

A fixed chip resistor or a thick-film electrical resistor providing in circuit boards and the like and, to an electrical resistor obtained by sintering in a non-oxidizing atmosphere, resistance pastes for producing an electrical resistor and a method for making such resistors. The aforesaid objects are achieved by the provision of an electrical resistor obtained using at least one molybdate belonging to the following groups (A) and (G) with or without a fluoride of an alkaline earth metal, and an electrical resistor paste obtained using the aforesaid components with or without a carbonate of an alkaline earth metals,

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Gunma, Japan

Shoichi Tosaka