Mutilayer ceramic capacitor
AssigneeMurata Manufacturing Co., Ltd.
InventorMakoto Nishikori
Life of this patent
Estimating the term…
Abstract
A multilayer ceramic capacitor includes a first counter portion including first and second regions, and a first middle region located between the first and second regions and including coverage higher than coverages thereof, a second counter portion including third and fourth regions, and a second middle region located between the third and fourth regions and including coverage higher than coverage thereof. A thickness of each of the first and second middle regions is about 101.6% or more and about 111.3% or less of a thickness of each of the first, second, third, and fourth regions, and a difference between coverage of each of the first and second middle regions and coverage of each of the first, second, third, and fourth regions is about 2.2 percentage points or more.
Claims20
A multilayer ceramic capacitor comprising:
- a multilayer body including a plurality of dielectric layers that are laminated, a first main surface and a second main surface opposed to each other in a lamination direction, a first lateral surface and a second lateral surface opposed to each other in a width direction orthogonal or substantially orthogonal to the lamination direction, and a first end surface and a second end surface opposed to each other in a length direction orthogonal or substantially orthogonal to the lamination direction and the width direction;
- a plurality of first internal electrode layers each on a corresponding one of the plurality of dielectric layers and each exposed at the first end surface;
- a plurality of second internal electrode layers each on a corresponding one of the plurality of dielectric layers and each exposed at the second end surface;
- a first external electrode on the first end surface and connected to the plurality of first internal electrode layers;
- and
- a second external electrode on the second end surface and connected to the plurality of second internal electrode layers;
- wherein
- each of the plurality of first internal electrode layers includes a first counter portion opposed to a corresponding one of the plurality of second internal electrode layers and a first extension portion extending from the first counter portion toward the first end surface and exposed at the first end surface;
- each of the plurality of second internal electrode layers includes a second counter portion opposed to a corresponding one of the plurality of first internal electrode layers and a second extension portion extending from the second counter portion toward the second end surface and exposed at the second end surface;
- the first counter portion includes:
- a first region adjacent to the first end surface;
- a second region adjacent to the second end surface;
- and
- a first middle region between the first region and the second region and including coverage higher than coverage of the first region and coverage of the second region;
- the second counter portion includes:
- a third region adjacent to the second end surface;
- a fourth region adjacent to the first end surface;
- and
- a second middle region located between the third region and the fourth region and including coverage higher than coverage of the third region and coverage of the fourth region;
- a thickness of each of the first middle region and the second middle region is about 101.6% or more and about 111.3% or less of a thickness of each of the first region, the second region, the third region, and the fourth region;
- and
- a difference between coverage of each of the first middle region and the second middle region and coverage of each of the first region, the second region, the third region, and the fourth region is about 2.2 percentage points or more.
Dependencies are inferred from the claim text.