Patent ID: 6392161
Filing Date: 2002-05-21
Classification: H05K

Abstract:
A mounting substrate comprising:a base substrate having a usable substrate region used as part of a product and an unusable substrate region to be discarded, said base substrate being subjected to soldering treatment in which the surface thereof is brought into contact with solder; and on-substrate members arranged on a soldering surface side, to be subjected to said soldering treatment, of said base substrate, and on-substrate members being in a state in which the surfaces have a wettability against solder upon soldering treatment; wherein said on-substrate members are arranged in a non-contact portion with solder upon solder treatment in said unusable region, in said substrate region, or in said non-contact portion and said usable substrate region wherein a groove for separating said usable substrate region from said unusable substrate region is formed on the soldering surface side of said base substrate; said on-substrate members comprising members necessary only for manufacture and in a state in which the surface thereof have a wettability against solder upon soldering treatment; and wherein said members necessary only for manufacture comprise a set of a plurality of lands electrically connected to each other, said set of lands being arranged in said non-contact portion, in said usable substrate region, or in said non-contact portion and said usable substrate region, for checking whether or not said groove is certainly formed on the basis of the conduction state of said lands in said set.