HDI planning for aerospace electronics starts with the program's actual requirements and approval authorities. Flight hardware, ground support equipment and laboratory prototypes can have very different acceptance obligations. The presence of microvias or a particular workmanship class does not by itself establish aerospace suitability.
Identify the governing requirements
Obtain the controlled customer and program documents that apply to the board and assembly. Record their revisions, scope and precedence. Specify any required approvals, traceability, inspection and performance evidence rather than relying on a broad “aerospace quality” statement in the RFQ.
Define the intended environment and mission with the product team. Temperature, mechanical loading and other exposure must come from the actual application. Do not transfer an arbitrary qualification profile from an unrelated design simply because both are described as aerospace.
Program handoff record
| Area | Information to agree |
|---|---|
| Design authority | Who owns the construction and approves deviations? |
| Supplier requirements | Which approvals and documented capabilities are mandatory? |
| Evidence | Which records accompany the delivered lot and support acceptance? |
| Configuration | How are material, process and subcontractor changes controlled? |
Evaluate the microvia construction specifically
Describe the via arrangement, material system and expected assembly exposure. Ask how representative structures will be evaluated under the program's approved plan. Evidence must be assessed for its relevance to the purchased configuration; a general capability brochure is not a substitute.
For an illustrative process change, a supplier may propose another laminate or interconnect arrangement while preserving the external dimensions. Route the proposal through the designated authority and identify any renewed verification before approving manufacture. A schedule concern does not resolve the engineering effect of the change.
Keep commercial and technical acceptance aligned
Ensure that quotations include the required documentation and acceptance scope. Identify exclusions, special handling and approval milestones before order placement. Define how nonconforming material will be segregated and dispositioned through the agreed process.
Maintain the approved configuration and evidence so that repeat orders can be compared with the accepted baseline. This page does not claim aerospace certification, customer approval, export authorization or flight heritage for the website's operator. Verified company credentials and capabilities remain [NEEDS CLIENT INPUT]. Use this guide to prepare a precise supplier discussion, with the responsible program authority making the applicable qualification and acceptance decisions.
Continue the engineering review
- IPC-6016 replacement and procurement notes
- Microvia reliability and thermal exposure
- How to evaluate an HDI PCB manufacturer
- HDI PCB engineering hub
Review your HDI requirements
Share the board revision, proposed stackup, quantity and open questions. Include the requirements discussed in this guide so the project review starts with the same assumptions.