| Layer count and stackup | Single / double / multilayer, including blind-buried HDI and rigid-flex | Stackup planned around signal types and matched to fab capability |
| Impedance control | Consistent single-ended and differential targets | Calculated from stackup and material, with a verification sheet issued |
| High-speed interfaces | DDR / PCIe / USB / Ethernet / SerDes | Constraint-driven routing with length matching and topology |
| HDI process | Blind, buried, any-layer interconnect, via-in-pad | Via stack orders matched to the fab's process window |
| RF and mixed-signal | Low-loss laminates, tuned lines, analogue-digital partitioning | Antenna keep-out, feed lines and ground isolation planned together |
| Rigid-flex | Bend radius, dynamic flex zones, lamination structure | Components and vias constrained by process limits in the flex area |
| Power design | PDN modelling, decoupling, high-current paths | Sized for temperature rise across copper weight and parallel runs, with thermal analysis |
| Verification | DRC, DFM, impedance checks, SI / PI and thermal simulation | Cleared item by item; the reports ship with the release |
| Deliverables | Production data, assembly data, design sources, verification reports | Released to the fab's format; source files transferred |
| EDA platforms | Chosen to match your conventions and libraries | No forced format conversion |