Black Anodized Heat Sink for Telecom PA Modules
Matte black skived heat sink matching the base station colour scheme, with dense fins aligned to cabinet airflow.
Requirement
The PA module needs a heat sink that matches the all-black equipment finish and survives long-term salt fog and humidity. The previous supplier had visible shade differences and white stains from anodizing solution trapped between fins.
Our approach
We added thorough alkaline cleaning and neutralising before anodizing, sealing and drying after, and blow-dry each part between fins. Shade is controlled with a retained reference coupon. Fins run at 2 mm pitch, oriented to cabinet airflow.
Delivery and inspection
Colour coupon plus three samples for appearance approval; production checks shade and fin cleanliness.
Project summary
Appearance passed customer inspection with no visible white stains after salt spray testing. This black process is now their standard finish requirement.
Products used in this project
For a similar project, send your drawing — we will check whether the existing construction can be reused or needs redesign.
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