Fanless Industrial PC Heat Sink

Requirement

The customer builds fanless industrial PCs where the heat sink doubles as the rear chassis surface. Capacitors and connectors sit close together on the board, so the sink needs clearance slots while keeping a flat contact face against the chassis.

Our approach

Fins are skived first, then clearance slots and steps are milled with temporary supports between fins. The contact face is milled separately and flatness-corrected. Mounting holes are machined from the board datum in one setup.

Delivery and inspection

First batch of 50 pieces with a first-article report; fin orientation fixed after confirming chassis airflow.

Project summary

Key board components stayed within the customer design margin and the clearance slots passed assembly on the first try. The design is now standard on two models.