Patent ID: 7875810

Claim:
An electronic component-inspection wiring board, which comprises: a first laminate composed of plural first ceramic layers and having plural pads formed on a front surface thereof for electrically connecting and transmitting inspection signals to an electronic component subject to inspection, wiring layers formed between the first ceramic layers, and plural via-conductors including those which connect respective pads to the wiring layers and including those which are exposed on a rear surface of the first laminate; and a second laminate composed of second ceramic layers made of the same ceramic material as that of the first ceramic layers, having plural via-conductors extending between front and rear surfaces of the second laminate, the rear surface of the first laminate overlying the front surface of the second laminate, wherein a land connecting a via-conductor exposed on the rear surface of the first laminate and a via-conductor exposed on the front surface of the second laminate is disposed between the first and second laminates, and the diameter of the land is 2-5 times larger than the diameter of a via-conductor connected to the land, wherein an amount of conductor present per unit volume of the first laminate is higher than an amount of conductor present per unit volume of the second laminate, wherein the first laminate is fixed to the second laminate.