公开(公告)号：US20190304665A1

公开(公告)日：2019-10-03

申请号：US16264496

申请日：2019-01-31

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuki KITASHIMA ,  Masaki KITAJIMA ,  Takeo OHAGA ,  Takeshi SHIMADA ,  Yoshiaki HIRAMA ,  Daigo MIZUMURA ,  Ryota WATANABE ,  Masato KOIKE ,  Yuusuke MORITA

IPC: H01F27/29 ,  H01F27/28 ,  H01F41/04 ,  H01F27/255 ,  H01F41/02

Abstract: A surface mount inductor includes a coil including a wound portion and a feeder end portion drawn out from the wound portion, a compact that contains a magnetic powder and that encapsulates the coil, and an external terminal disposed on the compact and connected to the coil. The compact has surfaces including two pressed surfaces, opposing each other in a direction of an axis of the wound portion and formed by being pressed in the direction of the axis, and a non-pressed surface, adjacent to the two surfaces and not pressed. The coil is disposed so that the axis of the wound portion is parallel to a mount surface of the compact. The mount surface is included in the non-pressed surface, the feeder end portion is exposed from the mount surface, and the external terminal is formed on only the non-pressed surface and connected to the feeder end portion.

公开(公告)号：US20190311841A1

公开(公告)日：2019-10-10

申请号：US16373543

申请日：2019-04-02

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Ryota WATANABE ,  Masaki KITAJIMA ,  Takeo OHAGA

IPC: H01F27/29 ,  H01F41/06 ,  H01F27/28

Abstract: A surface mount inductor includes a coil including a conducting wire winding portion with both ends on the outer circumference and a pair of extension portions that extend from the outer circumference, a molded body containing a metal magnetic powder and the coil embedded, and a pair of outer terminals disposed on the molded body and connected to the extension portions. The molded body has principal surfaces, end surfaces, and side surfaces. One principal surface serves as a mounting surface including a recessed portion with an elevated region and a lowered region. The coil is embedded in the molded body with the winding axis of the winding portion parallel to the recessed portion, and the pair of extension portions extend from the outer circumference toward the mounting surface to be exposed at the lowered region and connected to the pair of outer terminals in the lowered region.

公开(公告)号：US20210110964A1

公开(公告)日：2021-04-15

申请号：US17067355

申请日：2020-10-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takeo OHAGA

IPC: H01F27/28 ,  H01F27/32 ,  H01F17/04 ,  H01F27/29

Abstract: A coil includes a winding section that are formed by winding a conductive wire having an insulating cover and a pair of opposite principal surfaces into an upper stage and a lower stage that are connected to each other by an innermost turn of the conductive wire that serves as a transition section while both ends of the conductive wire are located at an outermost turn of the conductive wire. The coil also includes a pair of lead-out portions that are taken from respective outermost turns of the upper stage and the lower stage and that continue to respective ends of the conductive wire. In the coil, at least part of the transition section includes a widened portion, and a width of the widened portion of the conductive wire is greater than a width of the conductive wire at a position other than the widened portion.

公开(公告)号：US20210043362A1

公开(公告)日：2021-02-11

申请号：US16987249

申请日：2020-08-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasutaka MIZUKOSHI ,  Takeo OHAGA ,  Masaki KITAJIMA

IPC: H01F27/28 ,  H01F27/255 ,  H01F41/061 ,  H01F41/02

Abstract: An inductor that includes a coil having a winding portion in which a conductor having a coating layer is wound, and a pair of lead-out portions formed by leading out the conductor from the winding portion; and a magnetic portion including magnetic powder and resin and configured to seal the coil. The magnetic powder includes first particles having a first average particle diameter, and second particles having a second average particle diameter smaller than the first average particle diameter, and a thickness of the coating layer has a value larger than the second average particle diameter.