Electronic component

Patent metadata

Field	Value
Publication number	US-10026556-B2
Application number	US-201615276172-A
Country	US
Kind code	B2
Filing date	Sep 26, 2016
Priority date	Oct 6, 2015
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

An electronic component includes an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and an external electrode disposed on at least the end surface. The external electrode includes a conductive resin layer located on at least the end surface. A first thickness of the conductive resin layer located on a central region of the end surface is greater than a second thickness of the conductive resin layer located on a peripheral region of the end surface.

First claim

What is claimed is:

1. An electronic component comprising:
an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and an external electrode disposed on at least one of the end surfaces,
wherein the external electrode includes a conductive resin layer located on at least the end surface, and a first thickness of the conductive resin layer located on a central region of the end surface is greater than a second thickness of the conductive resin layer located on a peripheral region of the end surface; the peripheral region of the end surface not including a corner of the end surface.

2. The electronic component according to claim 1 , wherein
the external electrode is also disposed on the side surface,
the conductive resin layer is also located on the side surface, and
a third thickness of the conductive resin layer located on the side surface is greater than the second thickness.

3. The electronic component according to claim 1 , wherein the external electrode is also disposed on the side surface, the conductive resin layer is also located on the side surface, and a third thickness of the conductive resin layer located on the side surface is less than the first thickness.

4. The electronic component according to claim 1 , wherein
the external electrode is also disposed on the side surface,
the conductive resin layer is also located on the side surface, and
a third thickness of the conductive resin layer located on the side surface is greater than the first thickness.

5. The electronic component according to claim 1 , wherein
the external electrode further includes a sintered metal layer disposed on the element body, and
the conductive resin layer is disposed on the sintered metal layer.

6. The electronic component according to claim 5 , wherein
the sintered metal layer is disposed on at lease the end surface, and
a fourth thickness of the sintered metal layer located on the central region of the end surface is greater than the first thickness.

7. The electronic component according to claim 1 , wherein
the external electrode further includes a sintered metal layer disposed on the end surface and the side surface,
the conductive resin layer is disposed on the sintered metal layer and located on the end surface and the side surface, and
a third thickness of the conductive resin layer located on the side surface is greater than a sixth thickness of the sintered metal layer located on the side surface.

8. The electronic component according to claim 1 , wherein
the external electrode further includes a plating layer disposed on the conductive resin layer.

9. An electronic component comprising:
an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and
an external electrode disposed on at least one of the end surfaces,

wherein
the external electrode includes a conductive resin layer located on at least the end surface,
a first thickness of the conductive resin layer located on a central region of the end surface is greater than a second thickness of the conductive resin layer located on a peripheral region of the end surface,
the external electrode further includes a sintered metal layer disposed on the element body,
the conductive resin layer is disposed on the sintered metal layer,
the sintered metal layer is disposed on the end surface and the side surface, and
a sixth thickness of the sintered metal layer located on the side surface is less than a fourth thickness of the sintered metal layer located on the central region of the end surface, and greater than a fifth thickness of the sintered metal layer located on the peripheral region of the end surface.

10. An electronic component comprising:
an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and
an external electrode disposed on at least one of the end surfaces,

wherein
the external electrode includes a conductive resin layer located on at least the end surface,
a first thickness of the conductive resin layer located on a central region of the end surface is greater than a second thickness of the conductive resin layer located on a peripheral region of the end surface,
the external electrode further includes a sintered metal layer disposed on the element body,
the conductive resin layer is disposed on the sintered metal layer,
the sintered metal layer is disposed on the end surface and the side surface, and
surface roughness of the sintered metal layer located on the central region of the end surface is greater than surface roughness of the sintered metal layer located on the peripheral region of the end surface.

11. An electronic component comprising:
an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and
an external electrode disposed on at least one of the end surfaces,

wherein
the external electrode includes a conductive resin layer located on at least the end surface,
a first thickness of the conductive resin layer located on a central region of the end surface is greater than a second thickness of the conductive resin layer located on a peripheral region of the end surface,
the external electrode further includes a sintered metal layer disposed on the element body,
the conductive resin layer is disposed on the sintered metal layer,
the sintered metal layer is disposed on the end surface and the side surface, and
surface roughness of the sintered metal layer located on the side surface is greater than surface roughness of the sintered metal layer located on the peripheral region of the end surface.

12. An electronic component comprising:
an element body having a pair of end surfaces opposing each other and a side surface adjacent to the pair of end surfaces, and an external electrode disposed on the element body, and including a conductive resin layer,
wherein the conductive resin layer includes a first portion disposed on the end surface and a second portion disposed on the side surface, and a first thickness of the first portion at a central region of the end surface is greater than a second thickness of the first portion at a peripheral region of the end surface; the peripheral region of the end surface not including a corner of the end surface.

13. The electronic component according to claim 12 , wherein
a third thickness of the second portion is greater than the second thickness.

14. The electronic component according to claim 12 , wherein
a third thickness of the second portion is less than the first thickness.

15. The electronic component according to claim 12 , wherein
a third thickness of the second portion is greater than the first thickness.

16. The electronic component according to claim 12 , wherein
the external electrode includes a sintered metal layer disposed between the element body and the conductive resin layer, the sintered metal layer including a third portion disposed on the end surface and a fourth portion disposed on the side surface, and
a sixth thickness of the fourth portion is less than a fourth thickness of the third portion at the central region of the end surface, and greater than a fifth thickness of the third portion at the peripheral region of the end surface.

17. The electronic component according to claim 12 , wherein
the external electrode includes a sintered metal layer disposed between the element body and the c

Assignees

• Tdk Corp

Inventors

• Ando Norihisa
• Takeda Atsushi
• Kaneko Hideki

Classifications

• H01G4/232

  electrically connecting two or more layers of a stacked or rolled capacitor · CPC title

• H01G4/2325

  characterised by the material of the terminals · CPC title

• H01G4/30 Primary

  Stacked capacitors (H01G4/33 takes precedence) · CPC title

• H01G4/12

  Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title

• H01G4/228 Primary

  Terminals · CPC title