Samsung Electro-mechanics Co., Ltd.

Ji Su Hong

Jae Sung Park

Seung In Baik

Eun Ha Jang

Hee Sun Chun

Je Hee Lee

Hong Gi Nam

Hyoung Uk Kim

Jong Ho Lee

Chung Eun Lee

Hyeg Soon An

A multilayer capacitor is provided. The multilayer capacitor includes a body and an external electrode disposed outside the body, wherein the body includes an active portion including a plurality of dielectric layers and a plurality of internal electrodes stacked with dielectric layers interposed therebetween, and a side margin portion covering at least one side surface of side surfaces to which the internal electrodes are exposed in the laminate, wherein the side margin portion includes a dielectric including a BaTiO-based main component, a first subcomponent including a rare earth element, and a second subcomponent including Zr, wherein, based on a molar content per 100 moles of the main component, when a molar content of the rare earth element is RE, a molar content of Zr and RE satisfies 0.20≤Zr/RE≤0.37.

Multilayer capacitor including a rare earth element and zirconium

A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes laminated in a first direction, and external electrodes. The body includes an active portion, in which the plurality of internal electrodes are disposed to form capacitance, corresponding to a region between internal electrodes disposed on an outermost side in the first direction, among the plurality of internal electrodes, a cover portion covering the active portion in the first direction, and a side margin portion covering the active portion in a second direction, perpendicular to the first direction, and 1.49<A1/A2<2.50 where A1 is an average grain size of the dielectric layer in a central region of the active portion, and A2 is an average grain size of the dielectric layer in an active-cover boundary portion, adjacent to the cover portion, of the active portion.

Multilayer capacitor

A multilayer capacitor includes a body including a multilayer structure in which a plurality of dielectric layers are stacked in a first direction and a plurality of internal electrodes stacked with the dielectric layer interposed therebetween and external electrodes formed outside the body and connected to the internal electrodes. The body includes an active portion and a side margin portion covering the active portion and opposing each other in a second direction, and 1<A2/M1≤1.5 and A2<A1 in which A1 is an average grain size of the dielectric layers in a central region of the active portion, A2 is an average grain size of the dielectric layers at an active boundary part of the active portion adjacent to the side margin portion, and M1 is an average grain size of the dielectric layers in a central region of the side margin portion.

Multilayer capacitor having improved reliability by adjusting grain size of dielectric layer

A ceramic electronic component includes a body including a dielectric layer and internal electrodes; and external electrodes disposed on the body and connected to the internal electrodes. The dielectric layer includes a plurality of grains and a grain boundary disposed between adjacent grains, and GB1/G1 is 5 or more in mass ratio, where G1 is a content of Si of one of the plurality of grains and GB1 is a content of Si of the grain boundary.

Ceramic electronic component

A multilayer electronic component includes: a body including dielectric layers; side margin portions disposed on side surfaces of the body, respectively; and external electrodes disposed on end surfaces of the body, respectively. The body includes a capacitance forming portion including internal electrodes disposed alternately with the dielectric layers and cover portions disposed on upper and lower surfaces of the capacitance forming portion, respectively. Ga2/Ga1 is 0.8 or more and less than 1.0 and Ga2/Gc1 is 0.8 or more and less than 1.0. a1 is a central portion of the capacitance forming portion, a2 is a boundary portion between the capacitance forming portion and the cover portion in the capacitance forming portion, and c1 is a boundary portion between the capacitance forming portion and the cover portion in the cover portion. Ga1, Ga2, and Gc1 are average sizes of dielectric grains at a1, a2, and c1, respectively.

Multilayer electronic component

A multilayer ceramic electronic component includes: a ceramic body having a capacitance formation portion, and including a dielectric layer and a first internal electrode and a second internal electrode with the dielectric layer interposed therebetween, a first margin portion disposed on the surface of the capacitance formation portion, and a second margin portion disposed on the other surface of the capacitance formation portion; a first external electrode; and a second external electrode. A following formula 1 is satisfied, [formula 1]&#x2212;0.1&#x2264;(Tm&#x2212;Ta)/Ta, where in the formula 1, Tm is an average height of a central region of the margin portion, and Ta is an average height of an outer region of the capacitance formation portion in a second direction.

Multilayer ceramic electronic component

A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes laminated in a first direction, and external electrodes. The body includes an active portion, in which the plurality of internal electrodes are disposed to form capacitance, corresponding to a region between internal electrodes disposed on an outermost side in the first direction, among the plurality of internal electrodes, a cover portion covering the active portion in the first direction, and a side margin portion covering the active portion in a second direction, perpendicular to the first direction, and 1.49&#x3c;A1/A2&#x3c;2.50 where A1 is an average grain size of the dielectric layer in a central region of the active portion, and A2 is an average grain size of the dielectric layer in an active-cover boundary portion, adjacent to the cover portion, of the active portion.

A dielectric composition includes: a BaTiO-based main component and a first accessory component, wherein the first accessory component includes dysprosium (Dy) and terbium (Tb), the sum (Dy+Tb) of contents of dysprosium (Dy) and terbium (Tb) is more than 1.5 mol and 2.0 mol or less based on 100 mol of Ti of the main component, and 0.1&#x2264;Tb/Dy&#x3c;0.15 in which Tb/Dy is a ratio of the content of terbium (Tb) to the content of dysprosium (Dy).

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Suwon-si, South Korea

Ji Su Hong