1.Definition A PCB buried via is a hole that connects different layers of conductive traces within a multilayer printed circuit board. Unlike through holes and blind vias, buried vias are completely hidden inside the PCB and are not visible on the surface. This design allows the PCB to maintain high-density routing while optimizing signal transmission … Read more
Recently, I encountered a customer complaint regarding PCBA blind and buried via issues. I took this opportunity to study the topic and share knowledge with my colleagues and friends. **Core Concept:** In traditional PCB design, vias (referred to as “through holes” or “vias”) that connect different layers of circuits are through holes that extend from … Read more
How does traditional plating address the “dog bone effect” and void defects when the aspect ratio of the interlayer vias exceeds 10:1? Technical Principles and Process Challenges Structural Characteristics of Blind and Buried Vias Definition Differences Blind Via: Connects outer layers to inner layers, typically 50-200μm deep Buried Via: Completely embedded within inner layers, aspect … Read more
In natural convection heat dissipation products, the size of vias on the PCB has a significant impact on heat dissipation. However, the exact extent of this impact is still unknown. We will start with a simple product analysis, focusing on the via parameters of a single chip, to study how changes in via parameters affect … Read more