Patent ID: 9615444
Date: 2017-04-04
CPC Classifications: B23K,H01L,H05K

Claim:
1. An electronic assembly, comprising: an electronic board with a set of vias passing through the electronic board between a first surface and a second surface opposite the first surface, an electronic device attached to the first surface of the electronic board, a heat sink precursor attached to the second surface of the electronic board, the heat sink precursor defining a cavity facing the set of vias, and solder material that fills the set of vias so as to join a back of the electronic device to the set of vias and at least partially fills the cavity of the heat sink precursor so as to join the heat sink precursor to the set of vias and form a corresponding heat sink; wherein the electronic board comprises a first region and a second region arranged around the set of vias, the solder penetrating through the set of vias causing a joining of a radiator of the electronic device to the first region and causing a joining of an electrical contact of the electronic device to the second region.