A Lead Perovskite Y5U Dielectric for Multilayer Ceramic Capacitor
- 1 January 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (S2)
- https://doi.org/10.7567/jjaps.26s2.34
Abstract
A ceramic dielectric, based on a Ba, Ti and (Mg1/3Nb2/3)-substituted Pb(Zn1/3Nb2/3)O3 system, for multilayer ceramic capacitor (MLC) has been developed according to Y5U specifications in the EIA (Electronic Industries Association) standard. This ceramic dielectric, fired at 1000–1050°C, exhibits a 12000 relative dielectric constant, a 1.0% dissipation factor, a 30000 ΩF CR product (capacitance×resistance) at 25°C and a 10000 ΩF CR product at 85°C, respectively. An MLC using this dielectric and 70 Ag/30 Pd internal electrodes, has a small capacitance change of -30% at 1 kV/mm and a high breakdown voltage of 40 kV/mm. Capacitance temperature change is within -48% from -30 to +85°C. This dielectric is a promising candidate for use as a replacement for conventional barium titanate based dielectric for MLC.Keywords
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