Patent ID: 7087986

Claim:
A lead-frame based micro-array package comprising: a lead-frame including a plurality of leads, each lead including an elongated lead trace portion and a lead contact post, the lead contact posts being exposed at a bottom surface of the lead-frame and the lead trace portions not being exposed at the bottom surface of the lead-frame, wherein at least some of the lead contact posts have a generally noncircular bottom surface shape at least partially defined by a major dimension, the generally noncircular shape having a greater surface area than the corresponding surfaces of generally circular shapes with diameters substantially equal to the major dimension, and wherein the lead trace portions of at least some of the leads have segments extending between lead contact posts associated with adjacent leads; a semiconductor die that is electrically connected to at least some of the leads; and the lead-frame further including a die attach structure that at least partially supports the die and includes a plurality of additional contact posts that are exposed at the bottom surface of the lead-frame and have bottom surfaces having the same shape and footprint as the bottom surfaces of the lead contact post, where the lead contact posts and the additional contact posts are arranged in a fully populated two dimensional array having equal pitches between contact posts in both dimensions of the array; and an encapsulant that encapsulates the semiconductor die and at least a portion of the leads while leaving the lead contact posts exposed on a bottom surface of the package.