Multi-terminal type laminated capacitor and manufacturing method thereof

Abstract

Electrode layers 121 to 128 are superimposed in a ceramic porcelain 1 with ceramic layers therebetween. The electrode layers 121 to 128 respectively include internal electrodes A1 to A8 and extraction electrodes B1 to B8. Giving a description on the electrode layer 121, one end of the extraction electrode B1 is connected with the internal electrode A1 in the same layer, and the other end of the same is led onto a side surface of the ceramic porcelain 1. Further, the extraction electrode B1 is formed to be thicker than the internal electrode A1 in the same layer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of Ser. No. 11 / 354,102, filed Feb. 15, 2006, which is based upon and claims benefit of priority from the prior Japanese Patent Applications No. 2005-067034, filed on Mar. 10, 2005; the entire contents of both of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a multi-terminal type laminated capacitor and a manufacturing method thereof.[0004]2. Description of the Related Art[0005]In an electric supply source of a central processing unit (CPU) mounted in a digital electronic device, a reduction in voltage advances while a load current is increased. Therefore, suppressing a fluctuation in power supply voltage within an allowable value range with respect to a sudden change in load current becomes very difficult, and hence a laminated capacitor called a decoupling capacitor is connected with a power supply. F...

AI Technical Summary

Benefits of technology

This configuration effectively increases ESR while ensuring sufficient adhesion of terminal electrodes to ceramic porcelain, preventing exfoliation due to thermal shocks and maintaining electrical integrity.

Problems solved by technology

Therefore, suppressing a fluctuation in power supply voltage within an allowable value range with respect to a sudden change in load current becomes very difficult, and hence a laminated capacitor called a decoupling capacitor is connected with a power supply.

When the film thickness of the extraction electrode is reduced, a sufficient joining structure cannot be provided to the terminal electrode, and hence it is difficult to assure the adhesion of the terminal electrode with respect to the ceramic porcelain.

Therefore, when the number of the extraction electrodes is reduced, a sufficient joining structure cannot be provided to the terminal electrode, and hence it is difficult to assure the adhesion of the terminal electrode with respect to the ceramic porcelain.

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