HDI PCBs: When to Use Them
Microvias, stacked and staggered, let you route between fine-pitch BGAs in fewer layers. Use it when pitch or density forces your hand.
Drivers
Fine-pitch BGA, portability and layer reduction justify HDI.
Microvia types
Staggered is cheaper; stacked needs filling and plating control.
Cost reality
Each HDI build step adds cost and yield risk.
Key Takeaways
Key Takeaways
- Justify HDI by pitch or density.
- Staggered microvias cost less.
- Count every build step as cost.
