The Essential Guide to PCB Via Protection: Strategies and Standards

All too often Printed Circuit boards are viewed as simple two-dimensional surfaces. Nowhere is this oversimplifi cation more evident than in the complex structure of Vias. These essential structures are critical to the form and function of any PCB with more than a single layer. Without these vias modern electronics would not be possible in the way we know them today. This paper delves into the importance of via protection, what the Institute for Printed Circuits (IPC) recommends, the types of via protection, their applications, and the inherent limitations and trade-offs.