Investigation, analysis and determination of inclusions in high-tolerance board design

摘要

This paper outlines the inclusions in laminates that can cause the false rejection in printed circuit board (PCB) manufacture. Laminate inclusions are now Becoming prevalent because of The higher resolution required for The inspection of reduced track Ang gap widths. Visual methods Have been used to identify four Main types of inclusions; these Are: tadpoles, resin burnt, metal, And others.