Patent ID: 8362369

Claim:
A wiring board comprising: a core substrate haying a structure including an insulating base material made of an inorganic dielectric and a plurality of filamentous conductors provided in the insulating base material and piercing the insulating base material in a thickness direction thereof; a pair of connected pads made of portions of wiring layers oppositely disposed on one surface and the other surface of the core substrate, and electrically connected to opposite ends of a plurality of first selected filamentous conductors of the plurality of filamentous conductors in such a manner that the pair of the connected pads share the first selected filamentous conductors; first capacitively coupled pads made of portions of the wiring layers disposed on the one surface of the core substrate, and electrically connected only to one ends of a plurality of second selected filamentous conductors which are not selected for the connected pads among the plurality of filamentous conductors; and second capacitively coupled pads made of portions of the wiring layers, disposed on the other surface of the core substrate, and electrically connected only to one ends of a plurality of third selected filamentous conductors which are not selected for the connected pads and the first capacitively coupled pads among the plurality of filamentous conductors, wherein a wiring connection between one surface side and the other surface side of the core substrate is made through the pair of the connected pads, and a capacitor is formed of the second selected filamentous conductors, the third selected filamentous conductors and the insulating base material existing therebetween.