| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in which an electric field is increased in intensity per layer when dielectric layers are each lessened in thickness and increased in number of layers so as to enhance a laminated ceramic capacitor in capacitance and to lessen it in size at the same time, and a dielectric breakdown is liable to occur between inner electrodes, so that the laminated ceramic capacitor is shortened in service life and deteriorated in reliability of electrical properties. SOLUTION: Dielectric layers and inner electrode layers are laminated into a laminated ceramic capacitor of integral structure, where the dielectric layer is made of dielectric porcelain composition formed of sintered bodies that contain main component particles and these of a secondary phase formed at their grain boundaries. The component particles of a secondary phase are set higher in insulation resistance than the main component particles. At this point, a component contained as a solid solution in the main component particles may serve as a main component of the main particles of a secondary phase.
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