Patent ID: 8502357

Claim:
A method of manufacture of an integrated circuit packaging system comprising: forming a package lead having: a first retention structure around a perimeter of the package lead with a first concave surface, a first ridge, and a second concave surface, wherein the second concave surface is separated from the first concave surface by the first ridge; and a first flared shaped region and a third concave surface, wherein the third concave surface is separated from the second concave surface by the first flared shaped region, the first flared shaped region having a body cross-sectional area greater than any other horizontal cross-section of the package lead; forming a die attach paddle adjacent the package lead, the die attach paddle having: a second retention structure around a perimeter of the die attach paddle having a fourth concave surface, a second ridge, and a fifth concave surface, wherein the fifth concave surface is separated from the fourth concave surface by the second ridge; and a second flared shaped region and a sixth concave surface, wherein the sixth concave surface is separated from the fifth concave surface by the second flared shaped region, the second flared shaped region having a body cross-sectional area greater than any other horizontal cross-section of the die attach paddle; attaching an integrated circuit die to the die attach paddle; connecting a conductive connector to the integrated circuit die and the package lead; and applying an encapsulation over the integrated circuit die, the encapsulation conforming to the first retention structure and exposing a portion of the package lead.