Patent ID: 8207597

Claim:
A method of manufacture of an integrated circuit package system comprising: forming a lead frame including: forming an inner lead and an outer lead having planar surfaces and extending inwardly in the lead frame with: the inner lead having a planar surface width broader at an inner end portion inward in the lead frame and the outer lead having a consistent planar surface width or the outer lead having a planar surface width broader at the outer end portion inward in the lead frame and the inner lead having a planar surface width narrower between the inner end portion inward in the lead frame and an inner bottom portion outward in the lead frame; forming a protrusion in a slot adjacent to the inner lead; encapsulating an integrated circuit die electrically connected to the inner lead with the inner end portion inward in the lead frame exposed by a cavity in a mold chase and to the outer lead with the outer end portion inward in the lead frame exposed by a cavity in a mold chase; and singulating the outer lead and the inner lead from the lead frame.