In short
Evaluate an automotive PCB or PCBA supplier by the actual production site, IATF scope, PPAP responsibility, traceability and change-control plan for your program.
Define the vehicle program before comparing factories
“Automotive PCB” can mean a sensor board, an ECU, a battery-management assembly or a power-conversion board. These designs have different copper, thermal, package and test risks. Give each candidate the same released files, operating environment, expected demand and customer-specific requirements. Ask the supplier to describe a manufacturing route for that design, not an automotive capability in the abstract.
Connect quality-system claims to the build site
Where IATF 16949 is required, verify the certificate holder, address, process scope and current status for the facility that will perform the work. If fabrication and assembly happen at different sites, map the handoff and ask which party owns each quality record. Do not infer that an entire corporate group or every product is covered by one certificate.
Agree the PPAP level and deliverables with the customer and supplier. Depending on the program, the package may involve design and process records, first-article data, measurement studies or other approvals. A generic promise to “support PPAP” does not define who prepares, reviews and signs each item.
Ask how a change reaches the customer
For an automotive PCB or PCBA, ask how material lots, board revisions, component lots and test results will be associated with the units shipped. Confirm the retention and retrieval requirements before production. Then walk through a realistic change: a laminate becomes unavailable, a component reaches end of life, or assembly moves to another line. Who identifies the impact, who approves the substitute, and when is the customer told?
Request a sample or pilot build with the inspection and test evidence that will also be used in repeat production. Compare defects and corrective actions against an agreed acceptance plan rather than against an unsupported “zero defect” claim.
Use the automotive PCB service page to frame product-specific requirements, and quality control to select the evidence and tests to discuss with a supplier.
FAQ
Common questions
Is an IATF 16949 certificate enough to qualify an automotive PCB supplier?+
No. Verify the site and scope, then assess the design-specific process, PPAP responsibilities, traceability, test plan and change controls required by the customer.
What files should I send for a supplier review?+
Send the released PCB data, stackup, BOM and placement files if assembly is included, expected quantities, operating conditions and any customer-specific acceptance or documentation requirements.
How can I compare two automotive PCB quotations?+
Use the same revision and scope, then compare material assumptions, production site, PPAP deliverables, inspection and test coverage, traceability, tooling and change-control terms.
Technical references
Sources used for this guide
These sources explain the standards, materials or process details discussed above. Check the current revision when applying them to a new design.