Patent ID: 6262480
Filing Date: 2001-07-17
Classification: B29C,H01L

Abstract:
A semiconductor electronic device, comprising:a molded case of hardened material;a heat sink substantially fully embedded within the case and having a first major surface and a second major surface opposite from the first major surface;an integrated circuit chip attached to the heat sink along the first major surface thereof and embedded within the case; anda leadframe mounted on the heat sink on the first major surface thereof and including leads for electric connection to the integrated circuit chip;said second surface of the heat sink is formed with at least one trench substantially filled with the hardened material, the case including a hollow defined along an outer surface of the hardened material adjacent to said second surface of the heat sink, the hollow having an outer diameter that is smaller than a width of the trench in the heat sink and an inner diameter that is smaller than the outer diameter of the hollow, the inner diameter exposing a portion of the heat sink within the trench.