Murata Manufacturing Co., Ltd.

Hiroshi Okuizumi

Kozo Sato

Takao Kawachi

Eiji Iso

Isao Ida

Yoshiharu Satou

Yuuki Nagata

A manufacturing method for an electronic component includes preparing a first composite magnetic section provided with a first composite magnetic layer and at least one marker layer disposed on the first composite magnetic layer; and preparing a second composite magnetic section provided with a second composite magnetic layer and at least one coil formed by winding a conductive wire and buried in the second composite magnetic layer with part of the coil being exposed. The manufacturing method further includes obtaining a multilayer body by disposing the first composite magnetic section so that a surface on the opposite side of the first composite magnetic section to a surface where the marker layer is disposed opposes a surface of the second composite magnetic section; and obtaining a molded body having a marker area formed with non-conductive particles pressed into the first composite magnetic layer.

Electronic component and manufacturing method for the same

An inductor includes a coil including a winding section and extended sections, a body containing the coil and having a bottom surface and end surfaces adjacent to the bottom surface and opposed to each other, and outer electrodes on at least the bottom surface and connected to the extended sections. The winding-axis direction of the coil intersects with the bottom surface. The conductor has a cross section with a rectangular shape defined by thickness and width and has first surfaces defined by its extending direction and the thickness direction and second surfaces defined by the extending direction and the width direction. The winding section is spirally wound such that the second surfaces are on an outer side and on an inner side, respectively, and is wound in two tiers connected in their innermost locations, and both ends are in outermost locations in the tiers, respectively.

Inductor

An inductor includes a body that includes a coil and that contains a magnetic portion in which the coil is embedded, and a pair of outer electrodes that is disposed on a mounting surface of the body. The coil includes a winding portion formed by winding a conductive wire that has a coating layer and that has a pair of wide surfaces, and a pair of extended portions that extends from the winding portion. The pair of extended portions includes a twisted portion that is connected to the winding portion. The twisted portion is twisted about a virtual center line of an end portion of the winding portion, and a twisted part bends toward the mounting surface about an axis substantially perpendicular to the wide surfaces at the end portion. End portions of the pair of extended portions near the mounting surface are connected to the pair of outer electrodes.

Inductor with winding that includes extended portions having a twist

An inductor includes a body including a magnetic portion and a coil embedded in the magnetic portion and outer electrodes. The coil includes a wound portion formed by winding a conductive wire having a pair of wide surfaces in upper and lower layers and first and second lead-out portions extending from end portions of the wound portion at outermost peripheries of the upper and lower layers. One wide surface of a distal end portion of the first lead-out portion is exposed at a mounting surface of the body, a first surface adjacent to the mounting surface, and a corner portion therebetween. One wide surface of a distal end portion of the second lead-out portion is exposed at the mounting surface, a second surface adjacent to the mounting surface, and a corner portion therebetween. The outer electrodes cover the exposed wide surfaces of the first and second lead-out portions.

Inductor and method for manufacturing the same

A coil component includes an element body and a coil conductor provided inside the element body, in which the element body has a substantially rectangular shape and has upper and lower surfaces facing each other in a winding axis direction of the coil conductor and first to fourth side surfaces. The element body includes a first magnetic body portion and a second magnetic body portion provided on a main surface of the first magnetic body portion. The coil conductor includes a winding portion and first and second extended portions extended to any side surface of the element body. The first magnetic body portion includes on the main surface thereof an outer convex portion and an inner convex portion provided outside and inside the winding portion, respectively. The outer convex portion is exposed only on one side surface or two adjacent side surfaces of the element body.

Growing community of inventors

Nagaokakyo, Japan

Hiroshi Okuizumi