Multilayer electronic component

By using (Ba, Ca)TiO3 and BaTiO3 in the dielectric layer of a multilayer ceramic capacitor and introducing a specific ratio of rare earth elements and by-products, the microstructure was optimized, the problems of high-temperature reliability and TCC characteristics were solved, and a multilayer ceramic capacitor with stable operation and high capacitance at high temperature was realized.

CN122245966APending Publication Date: 2026-06-19SAMSUNG ELECTRO MECHANICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG ELECTRO MECHANICS CO LTD
Filing Date
2025-12-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing multilayer ceramic capacitors have insufficient reliability in high-temperature environments and it is difficult to achieve the target temperature-dependent capacitance change characteristics (TCC characteristics).

Method used

A dielectric layer containing (Ba, Ca)TiO3 and BaTiO3 as the main components is adopted, and a specific proportion of rare earth elements and other secondary components are introduced into the dielectric layer to form the first and second phases, so as to optimize the microstructure and improve high-temperature reliability and TCC characteristics.

Benefits of technology

This improved the reliability of multilayer ceramic capacitors in high-temperature environments and achieved the target TCC characteristics, meeting the requirements of electronic devices for miniaturization and high capacitance.

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Abstract

This disclosure provides a multilayer electronic component. The multilayer electronic component includes: a body comprising a capacitor forming portion, the capacitor forming portion including a dielectric layer and an inner electrode, the dielectric layer comprising (Ba,Ca)TiO3 and BaTiO3 as main components, the inner electrode and the dielectric layer being alternately disposed; and an outer electrode disposed on the body, wherein if a second phase comprising calcium (Ca) and titanium (Ti) and wherein the atomic percentage of rare earth elements is greater than or equal to 0.1 at%, is referred to as a first second phase, then the dielectric layer includes the first second phase, and in the cross-sectional region of the capacitor forming portion, based on the cross-sectional area of ​​the capacitor forming portion excluding the area of ​​the inner electrode, the area percentage of the first second phase included in the dielectric layer is greater than 0% and less than 4.58%.
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