Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
2006-05-16
2006-05-16
Dinkins, Anthony (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S311000, C501S134000
Reexamination Certificate
active
07046502
ABSTRACT:
A multilayer ceramic capacitor having an internal electrode layer and a dielectric layer having a thickness of less than 2 μm is provided, wherein the dielectric layer contains a plurality of dielectric particles, and when it is assumed that standard deviation of a particle distribution of the entire dielectric particles in the dielectric layer is σ (no unit), an average particle diameter of the entire dielectric particles in the dielectric layer is D50(unit: μm), and a rate that dielectric particles (coarse particles) having an average particle diameter of 2.25 times of the D50exist in the entire dielectric particles is p (unit: %), the σ and p satisfy σ<0.130 and p<12%; by which a TC bias characteristic can be expected to be improved while maintaining various electric characteristics, particularly a sufficient permittivity, even when the interlayer dielectric layer is made thin.
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Miyauchi Mari
Murosawa Takako
Noguchi Kazunori
Sato Akira
Dinkins Anthony
Oliff & Berridg,e PLC
TDK Corporation
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