Multilayer coil component

Patent metadata

Field	Value
Publication number	US-12469632-B2
Application number	US-202217706146-A
Country	US
Kind code	B2
Filing date	Mar 28, 2022
Priority date	Apr 6, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A multilayer coil component 1 includes an element body 2, a coil 5, a first terminal electrode 3, a second terminal electrode 4, a first connection conductor 6, and a second connection conductor 7. The coil 5 includes a first coil portion 8 that has one end of the coil 5 and is disposed on a side of a main surface 2c and a second coil portion 9 that has the other end of the coil 5 and is disposed on a side of the main surface 2d. A distance L2 between the first connection conductor 6 and the second coil portion 9 is larger than a distance L1 between the first connection conductor 6 and the first coil portion 8.

First claim

What is claimed is:

1 . A multilayer coil component comprising:
an element body formed by stacking 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 and having a coil axis extending in a facing direction of the pair of main surfaces; a first terminal electrode and a second terminal electrode connected to the coil and disposed on the mounting surface; a first connection conductor disposed outside the coil in the element body when viewed in the facing direction, extending in the facing direction, and connecting one end of the coil located on a side of the other of the main surfaces and the first terminal electrode to each other; and a second connection conductor connecting the other end of the coil located on a side of the one of the main surfaces and the second terminal electrode, wherein the coil comprises a first coil portion and a second coil portion, each of the first coil portion and the second coil portion being formed on two or more of the plurality of the insulator layers, the first coil portion having the one end of the coil and being disposed on a side of the other of the main surfaces, the second coil portion having the other end of the coil and being disposed on a side of the one of the main surfaces, and wherein a shortest distance between the first connection conductor and the second coil portion is larger than a shortest distance between the first connection conductor and the first coil portion.

2 . The multilayer coil component according to claim 1 ,
wherein a diameter of the first coil portion and a diameter of the second coil portion are different, and wherein a part of an outer edge of the first coil portion and a part of an outer edge of the second coil portion overlap each other when viewed in the facing direction.

3 . The multilayer coil component according to claim 1 , wherein the first terminal electrode and the second coil portion do not overlap each other when viewed in the facing direction.

4 . The multilayer coil component according to claim 1 ,
wherein a distance between the first connection conductor and the coil is set on the basis of a potential difference between the first connection conductor and the coil during use, and wherein the distance is longer at a position where the potential difference is large than at a position where the potential difference is smaller than at the position where the potential difference is large.

Assignees

• Tdk Corp

Inventors

• TOBITA Kazuya
• Kazuta Youichi
• Shiga Yuto
• Takubo Yuichi
• Urabe Junichiro
• Hamachi Noriaki
• Matsuura Toshinori

Classifications

• H01F27/323

  Insulation between winding turns, between winding layers · CPC title

• H01F41/041

  Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00) · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F5/04

  Arrangements of electric connections to coils, e.g. leads · CPC title