Back to results
US 5,117,326 AGranted
Monolithic ceramic capacitor
AssigneeMurata Manufacturing Co., Ltd.
InventorsHarunobu Sano, Nagato Omori, Yoshiaki Kohno, Yukio Sakabe
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMurata Manufacturing Co., Ltd.
InventorsHarunobu Sano, Nagato Omori, Yoshiaki Kohno, Yukio Sakabe
Estimating the term…
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.
A monolithic ceramic capacitor comprising a plurality of dielectric ceramic layers united to one another to form a monolithic body, a plurality of internal electrodes each formed between two adjacent dielectric ceramic layers, and external electrodes formed on opposite sides of said monolithic body and each being connected to alternate internal electrodes, characterized in that said 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, said basic composition mainly comprising barium titanate and a bismuth compound incorporated therein, and in that said internal electrodes comprise copper or a copper alloy.
A monolithic ceramic capacitor comprising a plurality of dielectric ceramic layers united to one another to form a monolithic body, a plurality of internal electrodes each formed between two adjacent dielectric ceramic layers, and external electrodes formed on opposite sides of said monolithic body and connected to alternate internal electrodes, wherein:
Dependencies are inferred from the claim text.