Patent ID: 8309859

Claim:
A substrate comprising: a base material, the base material comprising a plurality of insulating layers each comprising a plurality of pads disposed on a top surface thereof; a first solder part disposed on a first of the plurality of the pads on an uppermost insulating layer of the plurality of the insulating layers of said base material and used for connection to an electronic component; and a second solder part disposed on a second on the plurality of the pads on the uppermost insulating layer of said base material and outside of the electronic component mounting region of the substrate, the second solder part being made of a same kind of solder as that of said first solder part, wherein a surface of said first solder part opposite to a surface facing said base material is made to be a flat surface, and a maximum height of said second solder part from the uppermost insulating layer of said base material is lower than a height of said flat surface of said first solder part from the uppermost insulating layer of said base material, wherein the second solder part includes an uppermost surface that is below an uppermost surface of a cover film disposed on the uppermost insulating layer of the base material, and wherein the first solder part includes an uppermost surface that is above the uppermost surface of the cover film.