HDI PCBs have a higher unit circuit density than traditional PCBs. They use a combination of buried and blind vias, as well as microvias with a diameter of 0.006 inches or less.
High-density circuit boards are PCBs with the following or more features:
There are through-holes and buried vias, surface-to-surface, at least two layers with holes, core-to-coreless structure, powerless substrate structure without power connection, core-to-coreless structure alternative
| Name: | HDI PCB RF circuit board |
| Base material: | FR-4 |
| Copper thickness: | 1 ounce |
| Board thickness: | 1. 6mm, 1. 6mm |
| Aperture: | 0. 1mm |
| Line width: | 3 million |
| Line spacing: | 3 million |
| Surface treatment: | tin-spray lead-free, tin-spray lead-free |
| Minimum aperture: | 0. 25mm |
| Minimum line spacing: | 0. 003" |
| Color: | green or as per your requirements |