Dielectric Characteristics of a Complex Perovskite Multilayer Ceramic Capacitor with Thin Dielectric Layers

The demand for multilayer ceramic capacitors (MLC) of smaller size and higher volumetric capacitance is increasing sharply. The electrical properties of multilayer high-dielectric-constant relaxor ceramic capacitors of dielectric thickness from 3 to 32 µ m were measured. MLC (1.0 µ F) conforming to Y5V temperature characteristics were produced in EIA 0402 size (1.0×0.52 mm). The dielectric constant and ac voltage dependence of change in capacitance were found to change with decreasing dielectric thickness.