Electronic device, dielectric ceramic composition and the production method

A technology of ceramic composition and electronic components, which is applied in the parts of fixed capacitors, electrical components, dielectrics of fixed capacitors, etc., can solve the problems of deterioration of life under high temperature load, difficulty in thin layering, multi-layering, etc., to ensure sufficient reliability. The effect of sex, large capacity
CN101024572AActive Publication Date: 2007-08-29TDK CORPARATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TDK CORPARATION
Publication Date
2007-08-29

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Abstract

A dielectric ceramic composition comprising a main component including BaTiO 3 , a fourth subcomponent including an oxide of R1 (note that R1 is at least one selected from Y, Ho, Er, Tm, Yb and Lu) and a fifth subcomponent including an oxide of R2 (note that R2 is at least one selected from Dy, Tb, Gd and Eu); wherein a total number of moles of R1 and R2 with respect to 100 moles of the main component is 2 to 6 moles when calculated as a conversion of the R1 and a conversion of the R2, and a ratio of the fifth subcomponent to the total number of moles of R1 and R2 with respect to 100 moles of the main component is in a relationship of 0.5<=R2 / (R1 + R2)<=0.75 when calculated as a conversion of the R1 and a conversion of the R2. According to the present invention, high temperature load lifetime and capacity-temperature characteristics can be well balanced even when the dielectric layer of the electronic device is made thin, so that a sufficiently reliable dielectric ceramic composition can be provided.
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Description

technical field

[0001] The present invention relates to a dielectric ceramic composition and a method for producing the same, and more particularly to a dielectric ceramic composition for electronic parts and a method for producing the same. (Accelerated life of insulation resistance) and capacity temperature characteristics are also good, and have high reliability. Background technique

[0002] A laminated ceramic capacitor as an example of an electronic component is used in various electronic devices. In recent years, the demand for miniaturization and high performance of electronic equipment has been increasing, and laminated ceramic capacitors are no exception, and are rapidly developing towards miniaturization, low price, and high capacity.

[0003] Under such a trend, the thickness of the dielectric layer per layer in the laminated ceramic capacitor is being reduced, and thus a dielectric ceramic composition capable of maintaining the reliability of the capacitor even...

Claims

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