公开(公告)号：US20200152373A1

公开(公告)日：2020-05-14

申请号：US16533707

申请日：2019-08-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kozo SATO ,  Mikiya AOKI ,  Hiroyuki AOKI ,  Kazuhisa KITAMURA

IPC: H01F27/29 ,  H01F17/04 ,  H01F27/28 ,  H01F27/255 ,  H01F41/06

Abstract: A surface-mount inductor includes an element assembly having a core, a coil, and a magnetic material; and a pair of external terminals on a mounting surface of the element assembly. The core has a base portion and a columnar portion on an upper surface of the base portion. The coil is disposed on the base portion, and has a wound portion on the columnar portion, and a pair of extended portions extended from the wound portion. In a cross-section parallel to a winding axis, the wound portion has, in at least a part of a region where the upper stage and the lower stage are in contact with or oppose each other, a boundary surface formed by one portion of a conductive wire at one of upper and lower stage sides being in contact with or opposing a plurality of portions of the conductive wire at the other side.

公开(公告)号：US20200152367A1

公开(公告)日：2020-05-14

申请号：US16533697

申请日：2019-08-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kozo SATO ,  Mikiya AOKI ,  Hiroyuki AOKI ,  Kazuhisa KITAMURA

IPC: H01F27/06 ,  H01F27/24 ,  H01F27/28 ,  H01F27/29 ,  H01F27/32

Abstract: A surface-mount inductor includes an element assembly having a core, a coil, and a magnetic material; and a pair of external terminals disposed on a mounting surface of the element assembly. The core has a base portion and a columnar portion on an upper surface of the base portion. The coil is disposed on the base portion, and has a wound portion on the columnar portion, and a pair of extended portions extended from the wound portion toward a side surface of the base portion. The magnetic material includes the coil and covers at least a part of the core. The external terminals are disposed on the mounting surface of the element assembly and connected to the extended portions. The surface-mount inductor has, on a surface at a mounting surface side of the wound portion, a curved portion that is curved toward a side opposite to the mounting surface.

公开(公告)号：US20200152374A1

公开(公告)日：2020-05-14

申请号：US16536223

申请日：2019-08-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kozo SATO ,  Mikiya AOKI ,  Hiroyuki AOKI ,  Kazuhisa KITAMURA

IPC: H01F27/29 ,  H01F27/255 ,  H01F27/28 ,  H01F27/32 ,  H01F3/08 ,  H01F17/04

Abstract: A surface-mount inductor includes an element assembly having a core, a coil, and a magnetic material; and a pair of external terminals on a mounting surface of the element assembly. The core has a base portion and a columnar portion on an upper surface of the base portion. The coil is disposed on the base portion, and has a wound portion on the columnar portion, and a pair of extended portions extended from the wound portion. The base portion has at least one ridge portion at which the upper surface and a side surface are in linear contact with each other. The pair of extended portions are each disposed such that a flat surface portion connected to a flat surface portion disposed at an inner side portion of a conductive wire located at an outer peripheral portion of the wound portion is close to the ridge portion.

公开(公告)号：US20170229240A1

公开(公告)日：2017-08-10

申请号：US15496704

申请日：2017-04-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kazuhisa KITAMURA

IPC: H01F41/063 ,  H01F27/29 ,  H01F27/28

CPC classification number: H01F41/063 ,  H01F17/043 ,  H01F27/2828 ,  H01F27/2852 ,  H01F27/292 ,  H01F27/306 ,  H01F41/098

Abstract: A surface-mount inductor having a coil formed by winding a wire and a molded body for accommodating the coil, wherein the coil includes: a pair of first rolls of wire of a rectangular section which are wound in a two-roll arrangement, both ends of the wire being positioned at their outermost turns; and a pair of second rolls wound in positions adjacent to and each on opposite sides of the first rolls to partially overlap the first rolls, whereby the ends of the wire are brought out from the outermost turns of the second rolls as lead ends, with winding axis of the coil being parallel with the molded body and the lead ends extending over the surface of the mounting face.