High-Density Skived Heat Sink (1.5 mm Pitch)

When the envelope is fixed but the heat load grows, the only lever left is fin density. A 1.5 mm pitch adds more than 30% surface area over the same footprint, at the cost of higher airflow resistance — so fan selection has to be made together with the sink.

The trade-off

Denser fins mean a tighter channel. We do not recommend 1.5 mm pitch for pure natural convection unless the enclosure has forced airflow or heat pipes. During sampling we review the duct cross-section with you so the part does not end up with area but no airflow.

Process control

Dense skiving is sensitive to billet consistency. We use 6061-T6 billets with stable chemistry and check fin straightness and root integrity piece by piece.

Process notes

Billet inspection, precision skiving at 1.5 mm pitch, fin straightening, deburring, mounting face milling, surface finishing, piece-by-piece visual and profile check.

Applications

Compact power supplies, optical module cooling, automotive electronics, medical instruments, space-limited industrial equipment.