Patent ID: 7687723

Claim:
A mounting substrate on which a component is mounted by soldering, the component having a central terminal and a peripheral terminal formed around the central terminal, the mounting substrate comprising: a central electrode part that faces the central terminal; a plurality of outer electrode parts that face part of the peripheral terminal, wherein there are spaces between the outer electrode parts; a linkage electrode part formed on the mounting substrate outside the peripheral terminal that interconnects the outer electrode parts; a solder part formed on each of the central electrode part and the outer electrode parts; a resist film formed to prevent the solder of said solder part from flowing out of a predetermined range; and a gas-escape groove that is constituted by the absence of said central electrode part, the outer electrode parts and said resist film, is surrounded with walls of said resist film, and formed at least between a pair of outer electrode parts to interconnect areas on inner and outer sides of the peripheral terminal.