Monolithic ceramic capacitor

Details Monolithic ceramic capacitor Monolithic ceramic capacitor

1990-04-04

1992-05-26

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

264 61, 501137, H01G 406, C04B 3546

Patent

active

051173263

ABSTRACT:
A monolithic ceramic capacitor is characterized in that dielectric ceramic layers are made up of a dielectric ceramic composition consisting essentially of a basic composition and an antireducing agent incorporated therein to prevent it from reduction. The basic composition mainly comprises barium titanate and a bismuth compound incorporated therein, and the internal electrodes comprises a copper or a copper alloy. The antireducing agent has a composition expressed by the general formula: ##EQU1## wherein RO is at least one oxide selected from the group consisting of MgO, CaO, SrO and BaO, .alpha., .beta. and .gamma. are molar percentages of the respective components and take a value within the following respective ranges, 5.ltoreq..alpha..ltoreq.20, 10.ltoreq..beta..ltoreq.60, 20.ltoreq..gamma..ltoreq.35. The internal electrode may contain at least one additive selected from the group consisting of glass frit, powered dielectric and antireducing agent.

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