Products / HDI PCB
HDI PCB
Laser-drilled microvias and fine lines for fine-pitch components and compact, high-density designs.
More function on the same outline.
High-density interconnect boards use laser-drilled microvias to connect neighbouring layers, instead of drilling every via through the whole board. Smaller vias and finer tracks free up routing space under fine-pitch BGAs and let more function fit into a smaller outline, often with fewer layers than a conventional design would need.
We supply HDI boards with laser vias down to 0.10 mm and track and gap down to 50 µm, built to IPC Class 2 or Class 3. The layer build, such as the number of microvia layers and the use of buried vias, is agreed for each design and confirmed before production.
When to choose it
- Fine-pitch BGAs or other packages cannot be fanned out with through-hole vias.
- A fixed outline has to carry more function.
- High-speed signals benefit from shorter vias without stubs.
- You want to reduce board size or layer count compared with a conventional multilayer.
Key figures
| Min. laser via | 0.10 mm |
| Min. track / gap | 50 µm / 50 µm |
| Layer count | Up to 36 layers |
| Materials | FR-4, High-Tg FR-4 |
| Surface finishes | Lead-free HASL, ENIG, hard gold fingers, selective hard gold, chemical tin |
| IPC performance class | Class 2 / Class 3 |
Design notes
- Decide the via structure early. It drives cost more than the layer count does.
- Keep microvias between neighbouring layers where you can. Each extra build-up step adds a lamination cycle.
- Send the intended build-up with your data so it can be confirmed before quoting.
What we need to quote
Your production files (Gerber and drill data) with a fabrication drawing or readme that states board thickness, surface finish and copper weights.
For HDI boards, include the intended build-up and via structure, and any impedance requirements.
For assembly on the same order, add the BOM, assembly drawing and pick-and-place file.
Have a build in mind?
Upload your Gerbers and BOM for a fast, no-obligation quote. Need an NDA first? You can ask for one on the quote form.
Certificates and documentation
ISO 9001, ISO 14001 and ISO 45001 certificates from our manufacturing partner, together with RoHS and REACH declarations, are available on request.