Multilayered capacitor and board having the same mounted thereon

A multilayer capacitor, comprising:

• a capacitor body including a dielectric layer, and having a first surface and a second surface, opposing each other, a third surface and a fourth surface, connecting the first surface to the second surface and opposing each other, and a fifth surface and a sixth surface, connected to the first, second, third and fourth surfaces and opposing each other;
• a plurality of internal electrodes disposed inside the capacitor body, exposed to the fifth surface and the sixth surface, and having one ends exposed to the third surface or the fourth surface;
• first and second external electrodes disposed on the third surface and the fourth surface of the capacitor body, respectively;
• and
• a first side portion and a second side portion disposed on end portions of the internal electrode, exposed to the fifth surface and the sixth surface, respectively,
• wherein the first and second side portions are each divided into an inner layer formed to be adjacent to the capacitor body, and an outer layer formed on the inner layer, and a dielectric constant of the inner layer is less than or equal to half of a dielectric constant of the dielectric layer,
• the inner layer is extended to the second surface from the first surface and extended to the fourth surface from the third surface, and the inner layer separates the capacitor body and the outer layer,
• wherein the first and second side portions are provided with a ratio of an average thickness of the inner layer to an average thickness of the outer layer of 0.08 to 0.15, and
• wherein average thicknesses of the first and second side portions each is equal to or less than 10 μm.

A multilayer capacitor, comprising:

• a body comprising first and second internal electrodes stacked in a thickness direction with a dielectric layer interposed between each pair of first and second internal electrodes, the first internal electrodes being exposed to a third surface of the body and spaced apart from a fourth surface of the body opposing the third surface in a length direction and the second internal electrodes being exposed to the fourth surface and spaced apart from the third surface;
• a first external electrode disposed on the third surface and connected to the first internal electrodes;
• a second external electrode disposed on the fourth surface and connected to the second internal electrodes;
• and
• first and second side portions disposed respectively on fifth and sixth surfaces of the body opposing each other in a width direction, each of the first and second side portions comprising an inner layer contacting edges of the first and second internal electrodes in the width direction, and an outer layer disposed on the inner layer and having an average thickness greater than that of the inner layer,
• wherein a dielectric constant of the inner layer is lower than a dielectric constant of the outer layer and a dielectric constant of the dielectric layer, and the inner layer is extended to the lower surface from the upper surface of the body in the thickness direction and is extended to the fourth surface from the third surface, and the inner layer separates the body and the outer layer, and the first and second side portions are provided with a ratio of a dielectric constant of the inner layer to a dielectric constant of the outer layer equal to or less than 0.5.