Patent ID: 7405945

Claim:
A four-way lead flat package IC-mount printed circuit board comprising a printed circuit board on which a four-way lead flat package IC is to be mounted and which has front soldering land groups and rear soldering land groups for soldering the four-way lead flat package IC, the printed circuit board including solder drawing lands formed in a neighboring area between the front soldering land groups and the rear soldering land groups adjacent to the front soldering land groups, and/or a trailing area of the rear soldering land groups, wherein each of the solder drawing lands has a slit formed substantially parallel to lines of adjacent soldering lands of the front soldering land groups or the rear soldering land groups located in front of the solder drawing land, a forward portion and a backward portion respectively formed on the forward side and the backward side of the slit and joint portions formed on both sides of the slit for connecting the forward portion and the backward portion.