Study on expansion and contraction stability of multilayer PCB substrate
In the production process of printed circuit boards(PCBs),the stability of substrate expansion and contraction is a key factor for ensuring the final processing accuracy of the product.The aim is to construct an evaluation index system for the stability of substrate expansion and contraction based on the experience of controlling excessive expansion and contraction,and to use variance and correlation analysis to deeply study the correlation between substrate expansion and contraction stability and influencing factors.It is found that there are slight differences in the stability of substrate expansion and contraction between seasons.Tg,copper thickness of the board,number of openings,board thickness,and stacking rate factors have a significant impact on the stability of substrate expansion and contraction,and the degree of influence gradually decreases.
PCBfluctuation stabilityANOVAanalysis of correlation
万方数据
维普
