Understand the judgment and selection of copper clad plate
Through hole is one of the important components of multilayer PCB. We have introduced the meaning and characteristics of through hole, blind hole and buried hole in HDI board and how to judge the reliability of blind hole in the last issue of Through Hole Knowledge in High-density PCB Circuit Board Design.
However, if you want to name the link that accounts for the highest proportion of the material cost of all PCBs and has a strong interdependence with PCBs, it really depends on the copper clad plate, which accounts for 20% to 40% of the total PCB production cost.
As the core material for making printed circuit boards, copper clad boards are responsible for conducting, insulating and supporting printed circuit boards. Their quality determines the performance, quality, processability in manufacturing, manufacturing level, manufacturing cost and long-term reliability of printed circuit boards.