title: Y5U multilayer ceramic capacitors with high-specific capacitance and low-equivalent series resistance.
abstract: A dielectric powder material, for Y5U multilayer ceramic capacitors was developed in the Pb(Mg(1/3)Nb(2/3))O (3)-Pb(Ni(1/3)Nb(2/3))O(3)-PbTiO (3) ternary system by using an alkoxide process. Multilayer ceramic chip capacitors (10 muF) with high specific capacitances were fabricated using this powder. A Ag80%-Pd20% alloy was used for the internal electrodes. The alkoxide-derived capacitor had an extremely high specific capacitance of about 500 muF/cm(3) and a small temperature dependence meeting Y5U specifications of the EIA standard. The equivalent series resistance was approximately 20 mOmega at 500 kHz. The breakdown voltages of the capacitor were 300 V or higher. In accelerated load life tests and load humidity tests, no degradation of insulation resistance was found during 1000 h of testing.
authors.affiliation: NEC Corp., Kawasaki.
authors.forename: A
authors.initials: A
authors.lastname: Ochi
authors.forename: T
authors.initials: T
authors.lastname: Mori
authors.forename: M
authors.initials: M
authors.lastname: Nakanishi
authors.forename: K
authors.initials: K
authors.lastname: Utsumi
authors.forename: S
authors.initials: S
authors.lastname: Abe
authors.forename: T
authors.initials: T
authors.lastname: Yoshimoto