What Are The Difficulties in The Production of High-Level PCB Circuit Boards?
High-level PCB is usually defined as 10-20 layers or more high-level multi-layer circuit boards. Compared with traditional FR4 PCB products, high-level PCB has the characteristics of multiple thicknesses, multiple layers, dense lines, multiple through holes, large cell sizes, and thin dielectric layers, and requires internal space, layer alignment, impedance control, and reliability. High; is mainly…