Edge Plating (Castellation)
The industry generally accepts edge plating, or castellations, as copper plating that continues from the top and bottom surfaces and along one or more perimeter edges.
Edge plating and castellations are used in, but not limited to, edge soldering, edge connections, and current carrying capacity.
The most common challenges to plated edges are preparing the edge surfaces so that the adhesion of the plated copper is adequate. A challenge particular to edge castellations is being able to cut through the hole without creating burrs. We've developed unique techniques to address both of these concerns.