公开(公告)号：US20190115153A1

公开(公告)日：2019-04-18

申请号：US15949623

申请日：2018-04-10

Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Inventor： Jae Sung PARK ,  Jong Han KIM ,  Jin Seong KIM ,  Jeong Yun PARK ,  Jae Yeol CHOI ,  Sea Han Na DOO

IPC: H01G4/12 ,  H01G4/30

CPC classification number: H01G4/1209 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/224 ,  H01G4/232 ,  H01G4/248 ,  H01G4/30

Abstract: A multilayer ceramic capacitor includes: a ceramic body having first and second surfaces opposing each other and third and fourth surfaces connecting the first and second surfaces to each other; a plurality of internal electrodes disposed in the ceramic body, exposed to the first and second surfaces, and each having one end exposed to the third or fourth surface; and first and second side margin portions disposed on the first and second surfaces and covering exposed surfaces of the internal electrodes. A dielectric composition contained in the first and second side margin portions is different from a dielectric composition contained in the ceramic body, the first and second side margin portions contain a barium titanate-based base material powder and magnesium (Mg), manganese (Mn), and aluminum (Al) as accessory ingredients, and a content ratio of manganese (Mn) to magnesium (Mg), manganese (Mn), and aluminum (Al) satisfies 0.316≤Mn/(Mn+Mg+Al)≤0.500, based on a molar content of Mn, Mg and Al in the first and second side margin portions.