Samsung Electro-mechanics Co., Ltd.

Hyung Soon Kwon

Ji Hong Jo

Kyoung Jin Cha

Hyoung Uk Kim

Seung In Baik

Jae Sung Park

Tae Young Ham

Jong Han Kim

Ki Myoung Yun

Jeong Ryeol Kim

Min Young Choi

Jong Ho Lee

Yong Jong Park

Woo Chul Shin

Seok Hyun Yoon

Sim Chung Kang

Hee Sun Chun

In Tae Seo

Jong Hoon Kim

Jin Woo Lee

Dong Jun Jung

Seung Heui Lee

Yun Gwan Kim

Hyun Sub Oh

Mi Yang Kim

In Ho Jeon

Kwang Hee Nam

Byung Ho Lee

A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is greater than 0.2 mol and less than or equal to 1.5 mol based on 100 mol of titanium (Ti) of the base material main ingredient.

Dielectric ceramic composition and multilayer ceramic capacitor comprising the same

A multilayer electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body, wherein the dielectric layer includes a rare earth element, a secondary phase of the rare earth element and a dielectric grain, wherein, when an average thickness of the dielectric layer is defined as td and a maximum size of the dielectric layer of a secondary phase of the rare earth element in the thickness direction is defined as D, the dielectric layer includes two or more secondary phases of a rare earth element satisfying D/td≤0.2.

Multilayer electronic component

A dielectric composition includes a main ingredient having a perovskite structure represented by ABO, where A is at least one of Ba, Sr, and Ca and B is at least one of Ti, Zr, and Hf, and a first accessory ingredient. The first accessory ingredient comprises 0.1 mole or more of a rare earth element, 0.02 mole or more of Nb, and 0.25 mole or more and 0.9 mole or less of Mg, a sum of contents of the rare earth element and Nb is 1.5 mole or less.

Dielectric composition and multilayered electronic component comprising the same

A multilayer electronic component includes: a body including a dielectric layer including a plurality of dielectric grains and internal electrodes alternately disposed with the dielectric layer; and an external electrode disposed on the body and connected to the internal electrodes At least one of the plurality of dielectric grains includes Ba, Ti, Sn, and a rare earth element and has a core-dual shell structure, which includes a core, a first shell disposed on at least a portion of the core, and a second shell disposed on at least a portion of the first shell. When an average molar ratio of Sn to Ti included in the first and second shells is S1 and S2, respectively, and an average molar ratio of the rare earth element to Ti included in the first and second shells is R1 and R2, respectively, S1>S2 and R2>R1 are satisfied.

A dielectric composition includes one of BaTiO, (Ba,Ca)(Ti,Ca)O, (Ba,Ca)(Ti,Zr)O, Ba(Ti,Zr)Oand (Ba,Ca)(Ti,Sn)O, as a main component, a first subcomponent including a rare earth element, and a second subcomponent including at least one of a variable valence acceptor element and a fixed valence acceptor element. When a sum of contents of the rare earth element is defined as DT and a sum of contents of the variable valence acceptor element and the fixed valence acceptor element is defined as AT, (DT/AT)/(Ba+Ca) satisfies more than 0.5 and less than 6.0. In addition, a multilayer electronic component including the dielectric composition is provided.

Dielectric composition and multilayer electronic component including the same

A multilayer capacitor includes: a capacitor body including first and second internal electrodes alternately stacked with a dielectric layer interposed therebetween, and having first to six surfaces, the first internal electrode being exposed through the third, fifth, and sixth surfaces, the second internal electrode being exposed through the fourth, fifth, and sixth surfaces; first and second side portions disposed on the fifth and sixth surfaces of the capacitor body; and first and second external electrodes. The capacitor body includes upper and lower cover portions disposed on an upper surface of an uppermost internal electrode and a lower surfaces of a lowermost internal electrode, respectively, in a stacking direction of the first and second internal electrodes. The first and second side portions and the upper and lower cover portions include zirconium (Zr).

Multilayered capacitor and board having the same mounted thereon

A dielectric ceramic composition and a multilayer ceramic capacitor including the same are provided. The dielectric ceramic composition includes a BaTiO-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and niobium (Nb) as first accessory ingredients. A total content of the Dy and Nb is less than or equal to 1.5 mol, based on 100 mol of Ti of the base material main ingredient, and a content of the Dy satisfies 0.7 mol&#x3c;Dy&#x3c;1.1 mol, based on 100 mol of Ti of the base material main ingredient.

A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110&#x2264;Tb/RE&#x2264;2.333.

Multilayer ceramic capacitor

A multilayer ceramic capacitor includes: a ceramic body including a dielectric layer, a first internal electrode and a second internal electrode arranged to face each other with the dielectric layer interposed therebetween; and a first external electrode disposed on an exterior surface of the ceramic body and a second external electrode disposed on the exterior surface of the ceramic body, wherein the ceramic body includes an active portion, forming capacity, cover portions disposed on upper and lower portions of the active portion, and margin portions disposed on a side surface of the active portion, and wherein the dielectric layer, the cover portions, and the margin portions of the active portion include magnesium (Mg) having content of more than 0 mole, and less than or equal to 1.0 mole, relative to titanium (Ti) included in the dielectric layer, the cover portions and the margin portions of the active portion.

A multilayer ceramic electronic component includes a body including an internal electrode alternately arranged with a dielectric layer; and an external electrode disposed on the body and connected to the internal electrode. The internal electrode includes a plurality of nickel (Ni) grains, and a composite layer including tin (Sn) and nickel (Ni) is disposed at a grain boundary of the nickel (Ni) grains.

Multilayer ceramic electronic component

A method of manufacturing a multilayer ceramic electronic component includes preparing a ceramic green sheet, forming an internal electrode pattern by coating a paste for an internal electrode including a conductive powder including one or more of tungsten (W), molybdenum (Mo), chromium (Cr), and cobalt (Co), the sum of which is 1 to 20 wt o, and including tin (Sn), on the ceramic green sheet, forming a ceramic multilayer structure by stacking ceramic green sheets on which the internal electrode pattern is formed, and forming a body including a dielectric layer and an internal electrode by sintering the ceramic multilayer structure.

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Suwon-si, South Korea

Hyung Soon Kwon