Abstract:
An arrangement of pads with selective via in pad for mounting a semiconductor package on a substrate. In order to strengthen the soldered bonds, standard pads, which have a stronger bond, are used in locations of greatest stress and deflection. Vias in pad (VIP) are used at all other locations to improve routing advantages due to their smaller surface area.
Abstract:
An electronic assembly is disclosed. The electronic assembly includes a lower portion and a first elongate trace formed on an upper surface of the lower portion. The trace is covered by an upper portion, and an opening formed through an upper surface of the upper portion extends to the trace to expose a portion of the trace. A second elongate trace is formed on the upper portion. A portion of the second elongate trace positioned in the opening formed through the upper surface of the upper portion contacts the first elongate trace through the opening to form an electrical interconnection between the first trace and the second trace.