MULTILAYER CERAMIC CAPACITOR AND BOARD HAVING THE SAME MOUNTED THEREON

摘要

A multilayer ceramic capacitor may include: a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body; and first and second external electrodes formed to end surfaces of the ceramic body. The ceramic body may includes an active layer, a capacitance formation portion, and a cover layer, a non-capacitance formation portion, the cover layer includes a plurality of dummy electrode layers. When the number of the first and second internal electrodes is defined as AL, a thickness of each of the first and second internal electrodes is defined as AT, a thickness of each of the dummy electrode layers is defined as DT, and the number of the dummy electrode layers is defined as DL, DL is equal to {(T×x)−(AL×AT)}/DT, x being 9.0% or more.

主权项

1. A multilayer ceramic capacitor comprising:
a ceramic body including dielectric layers; first and second internal electrodes disposed in the ceramic body to face each other, having the dielectric layers interposed therebetween; and first and second external electrodes formed to cover both end surfaces of the ceramic body, wherein the ceramic body includes an active layer, a capacitance formation portion, and a cover layer, a non-capacitance formation portion, formed on at least one of upper and lower surfaces of the active layer, the cover layer includes a plurality of dummy electrode layers including central portions thereof disposed in positions corresponding to edges of the first and second external electrodes formed on upper and lower surfaces of the ceramic body, and having a predetermined length, and when a thickness of the ceramic body is defined as T, the number of the first and second internal electrodes is defined as AL, a thickness of each of the first and second internal electrodes is defined as AT, a thickness of each of the dummy electrode layers is defined as DT, and the number of the dummy electrode layers stacked in the cover layer is defined as DL, DL is equal to {(T×x)−(AL×AT)}/DT, x being 9.0% or more.