An HDI design review workshop should produce decisions that can be implemented in the released board, not only a shared vocabulary. Bring design, fabrication, assembly and procurement owners together around one controlled package. This page provides a reusable agenda and makes no claim about the content or attendance of a historical seminar.
Prepare the inputs
Circulate the current stackup, representative BGA escape, via schedule, mechanical constraints and unresolved questions before the meeting. Name the revision and identify which files are preliminary. Ask each participant to mark requirements or assumptions that could change the construction.
Invite the people who can approve the relevant decisions. A useful technical suggestion can remain unresolved if no one owns the product requirement or the supplier interface. Record who is responsible for design changes, commercial assumptions and final release.
Use a decision-oriented agenda
| Session | Required output |
|---|---|
| Routing constraints | Identify the specific nets and regions requiring HDI access |
| Construction | Compare stackups and draw every allowed via path |
| Manufacturing | Record process exceptions, material assumptions and assembly concerns |
| Acceptance | Agree representative evidence and the authority for disposition |
| Release | Assign actions, owners, required evidence and decision dates |
Work through a representative example
Choose a difficult region from the actual product and follow one connection from the component pad to its destination. Review the pad surface, interlayer path, reference arrangement and inspection access. Then ask whether a simpler supported construction can provide the same function.
This exercise makes disagreements concrete. A request for a smaller pad becomes a discussion of routing space and process margin. A request for another layer becomes a discussion of whether the relevant nets can reach it. Keep the original requirements visible while evaluating alternatives.
Close the meeting with a controlled record
For each action, record the issue, proposed resolution, approving owner and evidence required for closure. Link completed actions to revised drawings or files. Keep unresolved mandatory items separate from future improvement ideas so the release decision remains clear.
After the meeting, verify that all participants are using the approved revision and that the RFQ reflects the agreed construction. A workshop is complete when its decisions are traceable in the handoff, not merely when the presentation ends. Continue with the HDI design guidelines, release checklist and topic hub.