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When Chemistry Fails, Physics Takes OverStandard FR-4 desmear uses aggressive permanganate chemistry - it etches epoxy resin smear from hole walls beautifully. But it fails completely on PTFE (Teflon)-based materials used in RF and microwave PCBs. PT
Cross-section analysis with Olympus microscope. Plating thickness, hole wall quality, inter-layer bonding. Destructive testing for process validation per IPC-6012.
The hole inspection equipment checks the quality of the hole wall after PCB drilling, including roughness, nail head, resin residue, and glass fiber protrusion. Ensure that the hole wall meets the standard before electroplating.
Universe copper deposition pretreatment line GL231108B1032A + Atotech electroless copper. Chemical copper deposition creates conductive base for electrolytic plating.
PCB Microsection Analysis and Failure Detection GuideHow cross-section analysis verifies PCB manufacturing quality and diagnoses failure mechanisms.What Is PCB Microsection Analysis?Microsection analysis — also called cross-sectioning or metallograph