Blind and Buried Via Review
Review blind and buried vias as part of the complete multilayer construction. The connected layers, drilling method, build sequence and acceptance conditions determine the manufacturing route.
Requirements for an engineering review
| Topic | Information to supply | Decision to confirm |
|---|---|---|
| Connectivity | Via start/end layers and the intended electrical connection. | Confirm which structures are actually required. |
| Geometry | Hole, pad and capture dimensions in mm with stated tolerances. | Assess the construction and process conditions together. |
| Build sequence | Layer stackup, material and proposed sequential operations. | Confirm manufacturability, cost and site responsibility. |
| Acceptance | Inspection, connectivity and reliability requirements. | Agree verification relevant to the product use case. |
How to confirm the applicable range
Send the current revision and the limits that matter to your product. The review should identify the responsible manufacturing site or supply partner, the agreed conditions and the approval needed for exceptions. Keep the confirmed range, source and review date with the released project records.
Release checklist
- Resolve conflicting notes or units before the order is released.
- Confirm whether the requirement is routine, requires an engineering trial or is outside the proposed scope.
- Agree inspection or verification evidence and the owner of unresolved design decisions.
Prepare the next project decision
Continue with PCB Fabrication Capability, PCB Stackup and Impedance, PCB Manufacturing Services, DFM and DFMA Services.
Read the related purchasing checklist.
Discuss your revision, quantity and project requirements. Early enquiries are welcome when some files or requirements are still being prepared.
