What Are Plated Vias? 1.Plated vias, also known as PTH (Plated Through Hole) vias, are critical structures in printed circuit boards (PCBs) used to connect electrical signals between different layers. Normally divided into through holes 3, blind holes 1, and buried holes 2 as the follow picture [caption id="attachment_4322" align="alignnone" width="700"] Plated Vias[/caption] 2. NPTH (Non-Plated T...