A hole with plating on its walls that makes an electrical connection between conductive patterns on internal layers, external layers, or both, of a printed board.
Full Featured Product: All drill sizes will be treated as PTH unless NPTH is specified in the Drawing, Print, Drill file, drill tool description text file, or identified with a special note, for example “ 0.125 holes to be non plated” In addition, landless holes identified in the Gerber files will be treated as non plated: holes without pads, holes designated with a crosshair target, or holes with a significantly smaller pad (i.e. 0.125" holes with 0.050" unsupported pads).
PCBexpress quickturn Product: All holes in the drill file regardless of definition will be treated as plated holes. This means that they will have the hole size increased to accommodate plating, will be drilled at primary drill, and may or may not be plated (depending on presence of pads, proximity to copper features, or size of the drilled hole).
If drawing or tool description is different than the size specified within the drill file, we will use the drill file to determine finished hole size (For “Design Review” these errors are reported for customer clarification before manufacturing can begin).
All orders placed as “1 layer” will be treated as single sided and the holes barrels will be non-plated.