Choose a supplier whose demonstrated process matches the actual construction and whose engineering response resolves the hard details before tooling.
What to consider
Ask about the specific via stack, material system, registration, copper and inspection needs. Request relevant evidence rather than relying on general certifications or maximum capabilities. Evaluate how the supplier documents exceptions, manages substitutes and maintains traceability between prototype and production.
A practical review example
Use the most demanding region of the design as a review sample. A supplier’s explanation of the stack, process and verification may be more informative than a generic capabilities brochure.
Checks before release
- Review construction-specific evidence.
- Compare technical exceptions and test scope.
- Confirm communication, traceability and change-control arrangements.
Connect this decision to fabrication
Use the cost estimator to organize the initial discussion. Keep proposed values separate from the approved drawing and document the effect of any change on the rest of the construction.
- Separate setup, recurring fabrication and optional tests.
- Compare equivalent quantities, materials and acceptance criteria.
- Confirm the released construction before relying on price or delivery.
Technical references
HDI design and manufacturing overviewFabrication design guidelinesReferences checked 2 October 2026. Manufacturer data describes its stated construction and is not an HDIPCB.org manufacturing commitment.