Patent ID: 8431831

Claim:
A via comprising: a first hole having a first diameter centered about an axis and passing at least partially through a printed circuit board to a first depth; and a first depression, arranged such that the first hole passes through a portion of the first depression, wherein the first depression extends to a second depth that is less than the first depth, wherein the first depression further extends to at least some depth into a substrate of the printed circuit board, wherein the first hole is plugged and wherein the first depression remains unplugged, wherein the first depression is arranged on a first side of the printed circuit board, and wherein the first hole passes through a second, opposite side of the printed circuit board, further including: a second depression, arranged on the second side of the printed circuit board, such that the first hole passes through a portion of the second depression, wherein at least some portion of the first hole is arranged between the first depression and the second depression, wherein the second depression extends to at least some depth into a substrate of the printed circuit board, and wherein the second depression remains unplugged.