Electronic assembly

An electronic assembly, comprising:

• a first circuit board assembly, comprising a first circuit board and a first heat source disposed on the first circuit board;
• a second circuit board assembly, comprising a second circuit board and a second heat source disposed on the second circuit board, wherein the first circuit board and the second circuit board are spaced apart from each other;
• and
• a heat sink, located between the first circuit board and the second circuit board and comprising a base part, a plurality of fin parts and a thermally conductive cover part, wherein the base part has a hole, the plurality of fin parts and the thermally conductive cover part protrude from a side of the base part, the thermally conductive cover part covers the hole to form at least one heat dissipation channel in fluid communication with the hole, the base part is thermally coupled to the second heat source, and two opposite sides of the thermally conductive cover part are thermally coupled to the base part and the first heat source, respectively.