Patent ID: 11894188
Assignee: TDK CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multilayer capacitor comprising an element body including a pair of main surfaces facing each other in a first direction, and a first side surface and a second side surface facing each other in a second direction perpendicular to the first direction,
wherein the element body includes a plurality of first electrodes and a plurality of second electrodes disposed alternately to face each other via a dielectric layer in the first direction,
each of the plurality of first electrodes includes a first main body portion and a first extending portion extending from the first main body portion to reach the first side surface,
each of the plurality of second electrodes includes a second main body portion and a second extending portion extending from the second main body portion to reach the second side surface,
in a cross-section parallel to the first direction and the second direction, at least one of the plurality of first electrodes is curved such that the first main body portion is located on an outer side of the first extending portion in the first direction and the at least one of the plurality of first electrodes includes a first curve-start point closest to the first side surface and a second curve-start point second closest to the first side surface after the first curve-start point,
at least one of the plurality of second electrodes is curved such that the second main body portion is located on an outer side of the second extending portion in the first direction and the at least one of the plurality of second electrodes includes a fourth curve-start point closest to the second side surface and a third curve-start point second closest to the second side surface after the fourth curve-start point,
when a length of the element body in the second direction is defined as L0, a distance between the first side surface and the first curve-start point in the second direction is defined as L1, a distance between the first side surface and the second curve-start point in the second direction is defined as L2, a distance between the first side surface and the third curve-start point in the second direction is defined as L3, a distance between the first side surface and the fourth curve-start point in the second direction is defined as L4, a distance between the pair of main surfaces on a straight line that is parallel to the first direction and passes through a center of the element body in the second direction is defined as TL1, a distance between the pair of main surfaces on a straight line that is parallel to the first direction and passes through the second curve-start point is defined as TL2, and a distance between the pair of main surfaces on a straight line that is parallel to the first direction and passes through the third curve-start point is defined as TL3,
the following expressions (1) to (6) are satisfied:

0.03≤L1/L0≤0.1  (1)

0.1≤L2/L0≤0.25  (2)

0.75≤L3/L0≤0.9  (3)

0.9≤L4/L0≤0.97  (4)

0≤(TL1−TL2)/TL1≤0.02  (5)

0≤(TL1−TL3)/TL1≤0.02  (6).