Are zinc die-castings as good as extruded aluminum for heat sinks?
Die cast zinc alloys do not have as good thermal conductivity as extruded aluminum. However, die-casting brings several advantages that can outweigh this fact. e.g. ·· More efficient fin design is possible than with extrusions. ·· The fins are integral with the chassis resulting in a more efficient heat path, with no joints or interfaces. ·· One die-casting acts as chassis, heat sink, and container for both protection and EMI shielding.
