Heat Sink Extrusion Profile

Not every heat sink justifies skiving. For long parts with a constant section and volume demand, extrusion wins: one die, then cut to length. Unit cost is lower and lead time is stable.

When to choose extrusion

Constant section, variable length, moderate heat load — that is the sweet spot. For high power density or tighter fin pitch, skived or bonded-fin designs make more sense.

Fin geometry

Fin height to pitch ratio drives airflow resistance. Long lengths also need intermediate supports and a milled mounting face. We review the section before the die is cut.

Process notes

Die tooling, extrusion, T5 ageing, straightening, cutting, optional mounting face milling, anodizing.

Applications

LED strip cooling, power supply cooling, cabinet cooling, telecom equipment.