The 2288219-3 is a heat sink component manufactured by TE Connectivity designed for side-to-side airflow thermal management. The product is constructed from aluminum alloy material with a dual-finish specification: electroless nickel plating followed by anodized black coating to provide corrosion resistance and enhanced thermal performance. Key dimensional specifications include a length of 77.00 mm (with 0.8 mm typical tolerance), a width of 39.75 mm, and a height of 33.0 mm, with a maximum permissible burr of 2 mm. This heat sink is engineered for applications requiring efficient heat dissipation in compact spaces, offering reliable thermal management through its optimized geometry and protective surface finishes.