公开(公告)号：US09142343B2

公开(公告)日：2015-09-22

申请号：US13935442

申请日：2013-07-03

Applicant: TDK Corporation

Inventor： Hitoshi Ohkubo ,  Tomokazu Ito ,  Hideto Itoh ,  Yoshihiro Maeda ,  Manabu Ohta ,  Yuuya Kaname ,  Takahiro Kawahara

IPC: H01F27/29 ,  H01F5/00 ,  H01F27/28 ,  H01F17/00 ,  H01F27/02 ,  H01F27/255

CPC classification number: H01F27/2804 ,  H01F17/0033 ,  H01F27/022 ,  H01F27/255 ,  H01F27/29 ,  H01F27/292 ,  H01F2017/0073 ,  H01F2027/2809

Abstract: A coil component 1 includes a substrate 2, a planar spiral conductor 10a formed on a top surface 2t of the substrate 2, a lead conductor 11a connected to an outer peripheral end of the planar spiral conductor 10a, a dummy lead conductor 15a formed on the top surface of the substrate 2 and between an outermost turn of the planar spiral conductor 10a and an end 2X2 of the substrate 2 and free from an electrical connection with another conductor within the same plane, external electrodes 26a and 26b arranged in parallel with the top surface of the substrate 2, and a bump electrode 25a formed on a surface of the lead conductor 11a and connects the lead conductor 11a with the external electrode 26a. The external terminals 26a and 26b have a larger area than the bump electrodes 15a and 15b for securing a bonding strength.

Abstract translation: 线圈部件1包括基板2，形成在基板2的顶面2t上的平面状螺旋导体10a，与平面螺旋导体10a的外周端连接的引出导体11a， 基板2的上表面和平面螺旋导体10a的最外侧的一侧和基板2的端部2X2之间，并且与同一平面内的另一个导体没有电连接，与顶部平行布置的外部电极26a和26b 基板2的表面以及形成在引线导体11a的表面上的突起电极25a，并将引线导体11a与外部电极26a连接起来。 外部端子26a和26b具有比用于确保接合强度的凸块电极15a和15b更大的面积。