Patent ID: 7781899

Claim:
A leadframe for supporting a semiconductor chip, the leadframe comprising: a die pad including a first major surface and an opposing second major surface defining a thickness and having at least one perimeter edge, wherein the first major surface is configured to receive and be bonded to the semiconductor chip; a mold lock opening spaced from the at least one perimeter edge and outside of a bonding position of the semiconductor chip, the opening extending through the thickness of the die pad and through the first and second major surfaces, the mold lock opening having a greater area at the second major surface than at the first major surface; and a vent extending through the second major surface and at least partially through the thickness of the die pad and extending through the at least one perimeter edge and to the mold lock opening such that the vent comprises a channel in the second surface via which the mold lock opening is in communication with the at least one perimeter edge.