Patent ID: 7414301

Claim:
A printed circuit board, comprising: an array of lands that are aligned along a dipping direction for dip-soldering a device thereon; the lands, comprising: a land pattern; a wiring pattern extending from the land pattern, perpendicular the dipping direction and away from the device; a non-resist portion having topography, comprising: a first, second, and third continuous sections that vary in size; the first section is substantially commensurate in size with one or more land patterns that are located near a front end of the dipping direction; the second section having a varying length that is gradually increased along the dipping direction, covering one or more land patterns and wiring patterns that are aligned and located between the front end and a back end of the dipping direction; and the third section is substantially commensurate in size with one or more land patterns that are located near the back end of the dipping direction.