A New Relaxor Dielectric for High Voltage Multilayer Ceramic Capacitors with Large Capacitance

Abstract

A new ceramic dielectric, based on (Pb_0.65Ba_0.35)(Zr_0.7Ti_0.3)O₃ has been developed. This dielectric, fired at low temperature of 1080°C, showed a high dielectric constant of 4500, a less than 0.3% dissipation factor and flat temperature characteristics of capacitance satisfying Y5P specifications in the EIA (Electronic Industries Association) Standard. Evaluation as a multilayer ceramic capacitor (MLC) revealed an excellent capacitance dependence under a high DC field. Thus, this dielectric is one of the promising candidates for high voltage MLCs with large capacitance.