An integrated circuit (IC) package that includes a lead frame, and a die affixed to a first surface of a pad of the lead frame. The die is wire bonded to the lead frame. The package includes a heat sink spaced apart from a second surface of the pad, where the second surface opposes the first surface. Molding compound encapsulates the lead frame and the die. The molding compound is disposed between the heat sink and the second surface of the pad and is enabled access between the heat sink and the second surface through protruding features disposed on the heat sink, the second surface, and/or some combination of the two.