Multilayer coil component

Patent metadata

Field	Value
Publication number	US-12424364-B2
Application number	US-202217953549-A
Country	US
Kind code	B2
Filing date	Sep 27, 2022
Priority date	Sep 29, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

In a multilayer coil component, a coil is disposed in an element body. The coil includes a plurality of coil conductors. The plurality of coil conductors include first, second, and third end portions. The first, second, and third end portions are exposed from the element body on a first surface and connected to a first external electrode. The first, second, and third end portions are arranged in order in a first direction when viewed from a second direction along the first surface and orthogonal to the first direction. The first end portion and the third end portion overlap each other when viewed from the first direction at least in part. Each of the first end portion and the third end portion has a region not overlapping the second end portion when viewed from the first direction.

First claim

What is claimed is:

1. A multilayer coil component comprising:
an element body including first and second surfaces;
a coil disposed in the element body and including a plurality of coil conductors stacked in a first direction and electrically connected to each other; and
a pair of external electrodes separated from each other, disposed on an outer surface of the element body, and electrically connected to each other via the plurality of coil conductors, wherein
the pair of external electrodes include a first external electrode provided on the first surface and a second external electrode provided on the second surface,
the plurality of coil conductors include first, second, and third end portions exposed from the element body on the first surface and connected to the first external electrode,
the first, second, and third end portions are arranged in order in the first direction when viewed from a second direction along the first surface and orthogonal to the first direction,
the first end portion and the third end portion overlap each other when viewed from the first direction at least in part, and
each of the first end portion and the third end portion has a region not overlapping the second end portion when viewed from the first direction.

2. The multilayer coil component according to claim 1 , wherein the second end portion includes a region not overlapping the first end portion and a region not overlapping the third end portion when viewed from the first direction.

3. The multilayer coil component according to claim 1 , wherein the second end portion has a region not overlapping both the first end portion and the third end portion when viewed from the first direction.

4. The multilayer coil component according to claim 3 , wherein
the plurality of coil conductors include a first coil conductor including the first end portion, a second coil conductor including the second end portion, and a third coil conductor including the third end portion, and
lengths of current paths of the first and third coil conductors are shorter than a length of a current path of the second coil conductor.

5. The multilayer coil component according to claim 4 , wherein the first coil conductor linearly extends in a third direction intersecting the first and second directions from a connecting part where the first coil conductor and the first external electrode are connected.

6. The multilayer coil component according to claim 1 , wherein
the coil has a coil axis extending in the first direction, and
a shortest distance between the second end portion and the coil axis is smaller than a shortest distance between the first end portion and the coil axis in the second direction.

7. The multilayer coil component according to claim 1 , wherein each of the first end portion and the third end portion does not overlap the second end portion when viewed from the first direction.

8. The multilayer coil component according to claim 1 , wherein
the plurality of coil conductors include a first conductor group including a plurality of end portions exposed from the element body on the first surface and connected to the first external electrode, and a second conductor group including one or more end portions exposed from the element body on the second surface and connected to the second external electrode,
the first conductor group includes the first end portion, the second end portion, and the third end portion, and
the number of the end portions included in the second conductor group is smaller than the number of the end portions included in the first conductor group.

9. The multilayer coil component according to claim 8 , wherein the number of the end portions in the second conductor group is one.

10. The multilayer coil component according to claim 1 , wherein
the plurality of coil conductors further include a fourth end portion exposed from the element body on the first surface and connected to the first external electrode,
the first, second, third, and fourth end portions are arranged in order in the first direction when viewed from the second direction,
the second end portion and the fourth end portion overlap each other in the first direction at least in part, and
each of the second end portion and the fourth end portion has a region not overlapping the third end portion when viewed from the first direction.

Assignees

• Tdk Corp

Inventors

• Hamachi Noriaki
• Matsuura Toshinori
• Urabe Junichiro
• TOBITA Kazuya
• Shiga Yuto
• Kazuta Youichi
• Takubo Yuichi
• Suzuki Shunya
• Guo Xuran
• Kobayashi So

Classifications

• H01F5/04 Primary

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

• H01F2017/048

  with encapsulating core, e.g. made of resin and magnetic powder · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01F17/0013 Primary

  with stacked layers · CPC title