IP Library › Granted Patent US 12688964
Granted Patent B2
US 12688964 · App. 17/514,072 · Granted Jul 21, 2026

Multilayer coil component

Inventors: Yuichi Takubo (Tokyo, JP); Masaki Takahashi (Tokyo, JP); Youichi Kazuta (Tokyo, JP); Yuto Shiga (Tokyo, JP); Junichiro Urabe (Tokyo, JP); Noriaki Hamachi (Tokyo, JP); Kazuya Tobita (Tokyo, JP); Toshinori Matsuura (Tokyo, JP)
Assignee: TDK CORPORATION
H01F27/292H01F5/003H01F17/0013H01F27/2804H05K1/181H05K2201/1003H05K2201/10977
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Quick Facts
Patent No.
US 12688964
App. No.
17/514,072
Granted
Jul 21, 2026
Kind
B2
Abstract

A multilayer coil component 1 includes an element body 2 , a coil 10 , and a pair of terminal electrodes 3 . The element body 2 has a groove portion 20 provided on a main surface 2 c . The groove portion 20 is disposed between the pair of terminal electrodes 3 and extends over one side surface 2 e and the other side surface 2 f . The depth of the groove portion 20 in the direction in which the main surface 2 c and a main surface 2 d , which are a pair, face each other is smaller than the thickness of each of the pair of terminal electrodes 3 in the facing direction.

Claims (22)

1 . A multilayer coil component comprising:

an element body formed by laminating a plurality of insulator layers and having a pair of end surfaces facing each other, a pair of main surfaces facing each other, and a pair of side surfaces facing each other, one of the main surfaces being a mounting surface;

a coil disposed in the element body with a coil axis extending along a facing direction of the pair of side surfaces; and

a pair of terminal electrodes connected to the coil and disposed in recessed portions formed on the mounting surface on the respective end surface sides of the element body, wherein

the element body has a groove portion provided on the mounting surface,

the groove portion is disposed between the pair of terminal electrodes and extends to one of the side surfaces and to another one of the side surfaces, and

a maximum depth of the groove portion into the mounting surface and in a facing direction of the pair of main surfaces is smaller than a thickness of each of the pair of terminal electrodes extending into the recessed portions of the mounting surface, in the facing direction, and

wherein the multilayer coil component does not include any terminal electrode formed in the groove portion.

2 . The multilayer coil component according to claim 1 , wherein, in the pair of terminal electrodes, end portions facing each other in a facing direction of the pair of end surfaces are curved when viewed from the facing direction of the pair of side surfaces.

3 . The multilayer coil component according to claim 1 , wherein

the groove portion has a pair of side surface parts facing each other in a facing direction of the pair of end surfaces, a bottom surface part connecting the pair of side surface parts, and a connecting part connecting the pair of side surface parts and the bottom surface part, and

the connecting part is curved.

4 . The multilayer coil component according to claim 1 , wherein the groove portion is one of a plurality of groove portions that are provided.

5 . The multilayer coil component according to claim 1 , wherein the element body exists between the pair of terminal electrodes and the groove portion when viewed from the facing direction of the pair of side surfaces.

6 . A multilayer coil component comprising:

an element body formed by laminating a plurality of insulator layers and having a pair of end surfaces facing each other, a pair of main surfaces facing each other, and a pair of side surfaces facing each other, one of the main surfaces being a mounting surface;

a coil disposed in the element body with a coil axis extending along a facing direction of the pair of side surfaces; and

a pair of terminal electrodes, each comprising first and second conductor parts disposed orthogonal to each other, and connected to the coil, the first conductor parts being disposed in first recessed portions formed on the mounting surface and the second conductor parts being disposed in second recessed portions formed on the end surfaces, wherein

the element body has a groove portion provided on the mounting surface,

the groove portion is disposed between the pair of terminal electrodes and extends to one of the side surfaces and to another one of the side surfaces, and

a maximum depth of the groove portion into the mounting surface and in a facing direction of the pair of main surfaces is smaller than a thickness of each of the first conductor parts extending into the first recessed portions of the mounting surface, in the facing direction, and

wherein the multilayer coil component does not include any terminal electrode formed in the groove portion.