Why Stackup Is the Starting Point of a Manufacturable HDI Board

In many HDI projects, the real issues of an HDI printed circuit board (PCB) manufacturing stability are not only about a completed routing, but also depend on whether the stackup for HDI board is properly engineered to ensure reference continuity, interlayer transitions and structural implementability from the beginning.

If the HDI stackup design mainly focuses on layer count and routing space without any considerations of reference plane continuity and structural feasibility for the bare HDI board, risks might later emerge in both HDI PCB manufacturing control and electrical consistency.

For this reason, the manufacturability of an HDI board is not determined only at the production stage, it is decided during stackup planning stage.

KnownPCB is going to examine how stackup planning affects the manufacturability of HDI boards from 3 perspectives:

1. The role of HDI stackup beyond layer count

2. Return-path stability as part of HDI stackup quality of high-performace PCB

3. Common stackup choices that affect HDI board manufacturability

Click the link above and read more about these 3 points for a manufacturable HDI PCB.