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.