IP Library › Granted Patent US 11,264,171
Granted Patent B2
US 11,264,171 · App. 16/986,712 · Granted Mar 1, 2022

Electronic component

Inventors: Yuichi Nagai (Tokyo, JP); Takehisa Tamura (Tokyo, JP); Shinya Onodera (Tokyo, JP); Ken Morita (Tokyo, JP); Atsushi Takeda (Tokyo, JP)
Assignee: TDK CORPORATION
H01G4/248H01G4/012H01G4/12H01G4/30
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,264,171
App. No.
16/986,712
Granted
Mar 1, 2022
Kind
B2
Abstract

A conductive resin layer includes a first region positioned on the end surface, a second region positioned on the side surface, and a third region positioned on a ridge portion between the end surface and the side surface. In a case where a maximum thickness of the first region is T1 (μm) and a maximum thickness of the second region is T2 (μm), the maximum thickness T1 and the maximum thickness T2 satisfy a relation of T 2/ T 1≥0.11. In a cross-section along a thickness direction of the first region, a total area of voids in the first region is in a range of 5.0 to 36.0% of an area of the first region. In a cross-section along a thickness direction of the second region, a total area of voids in the second region is in the range of 5.0 to 36.0% of an area of the second region.

Claims (29)

1. An electronic component comprising:

an element body including a side surface and an end surface adjacent to each other; and

an external electrode disposed on the side surface and the end surface, wherein

the external electrode includes a conductive resin layer that is disposed on the side surface and the end surface and includes a plurality of voids, and a plating layer covering the conductive resin layer,

the conductive resin layer includes a first region positioned on the end surface, a second region positioned on the side surface, and a third region positioned on a ridge portion between the end surface and the side surface,

a maximum thickness T1 of the first region in μm and a maximum thickness T2 of the second region in μm satisfy a relation of

T 2/ T 1≥0.11,

in a cross-section along a thickness direction of the first region, a total area of the voids in the first region is in a range of 5.0 to 36.0% of an area of the first region, and

in a cross-section along a thickness direction of the second region, a total area of the voids in the second region is in the range of 5.0 to 36.0% of an area of the second region.

2. The electronic component according to claim 1 , wherein

the maximum thickness T1 and the maximum thickness T2 satisfy a relation of

T 2/ T 1≤0.48.

3. The electronic component according to claim 1 , wherein

a minimum thickness T3 of the third region in μm and the maximum thickness T1 satisfy a relation of

T 3/ T 1≥0.08.

4. The electronic component according to claim 1 , wherein

the maximum thickness T1 and the minimum thickness T3 satisfy a relation of

T 3/ T 1≤0.37.

5. The electronic component according to claim 1 ,

wherein, in a cross-section along a thickness direction of the third region, a total area of the voids in the third region is in a range of 3.0 to 11.0% of an area of the third region.

6. The electronic component according to claim 1 , wherein,

in a cross-section orthogonal to the side surface and the end surface, a surface of the second region curves in a convex shape in a direction away from the side surface.

7. The electronic component according to claim 1 , wherein

the external electrode further includes a sintered metal layer, the sintered metal layer being disposed on the side surface and the end surface and being covered with the conductive resin layer, and

with a plane including the end surface as a reference plane, a length from an end edge of the sintered metal layer to an end edge of the second region in a direction orthogonal to the end surface is larger than a length from the reference plane to the end edge of the sintered metal layer in the direction orthogonal to the end surface.

8. The electronic component according to claim 1 , wherein,

when viewed from a direction orthogonal to the side surface, an end edge of the second region curves.

9. The electronic component according to claim 1 , wherein,

the side surface is arranged to constitute a mounting surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 26, 2020
From: NAGAI, YUICHI; TAMURA, TAKEHISA; ONODERA, SHINYA; MORITA, KEN; TAKEDA, ATSUSHI
To: TDK CORPORATION
Reel/Frame 053606/0415 →
Priority Claims (1)
JP JP2019-147540 · Aug 9, 2019 · national
Continuity (1)
Related Publication 20210043385A1 · Feb 11, 2021
Cited By (1)
US 12,700,543