Patent ID: 8704368

Claim:
A stackable via package comprising: a substrate comprising a first surface; a trace on the first surface, the trace comprising a terminal; a solder ball on the terminal, the solder ball having a solder ball diameter A; a package body comprising a solder ball contact surface in direct physical contact with a first portion of the solder ball enclosed by the package body; and a via aperture in the package body exposing a second portion of the solder ball, the via aperture comprising a via bottom having a via bottom diameter B, where A<B, wherein the via aperture is defined by a via aperture sidewall of the package body, the via aperture sidewall extending between a principal surface of the package body and the via bottom, the via bottom comprising a via aperture shelf of the package body, a circumference of the solder ball contact surface in a plane parallel to the first surface of the substrate increasing between the first surface of the substrate and the via aperture shelf.