Capacitor and wiring board including the capacitor

Details Capacitor and wiring board including the capacitor Capacitor and wiring board including the capacitor

2008-04-10

2011-12-06

Bui, Hung S (Department: 2835)

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

C174S260000, C174S261000, C361S298200, C361S298300, C361S298400, C361S298500, C361S299100, C361S299200, C361S299300, C361S299400, C361S299500, C361S301100, C361S301300, C361S311000

Reexamination Certificate

active

08072732

ABSTRACT:
A capacitor is provided having a tough surface portion which prevents cracking that tends to occur when the capacitor is built-in or surface-mounted on a wiring board. A ceramic sintered body of the capacitor includes a capacitor forming layer portion, a cover layer portion and an interlayer portion. The capacitor forming layer portion has a laminated structure wherein ceramic dielectric layers and inner electrodes connected to a peripheral portion of capacitor via conductors, are alternately laminated. The cover layer portion is exposed at a surface portion of the ceramic body and has a laminated structure wherein ceramic dielectric layers and dummy electrodes not connected to the capacitor via conductors, are alternately laminated.

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patent: 2007/0121275 (2007-05-01), Takashima et al.
patent: 2006324576 (2006-11-01), None

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