Optimization of PCB build-up layer configuration for electronic assemblies with active embedded components in the board

Abstract

The manufacturing process of Printed Circuit Boards (PCB) with embedded active components requires several modifications on the build-up layer configuration, including the use of thinner layers and heterogeneous composite materials. From the point of view of second level interconnects the increase in density and complexity of the build-up of electronic board leads to an increase of the total resin-content. As demonstrated in a previous work, this increase of the ratio between resin and glass has a major consequence on the mechanical behavior of the assemblies, particularly on the fatigue resistance of component solder joints.