AEC-Q101 Diode Suppliers: Build a Model-Level Qualification Shortlist

Last Updated: 2026-10-08

Quick Answer

An AEC-Q101 diode supplier shortlist should identify qualified ordering codes and the evidence supporting each claim. A company name or automotive catalogue is not enough. Connect the qualification report to the supplied construction, manufacturing locations and change history, then evaluate customer approval for the intended application separately.

A shortlist needs product identity.

Start With an Exact Shortlist Entry

A list of Chinese manufacturers is useful only if purchasing can identify what each company is actually offering. Record the manufacturer, complete ordering code, package option, applicable qualification claim and contact responsible for the evidence. Keep an unanswered entry separate from a verified candidate.

Do not transfer a qualification statement from one diode family to another because both appear in the same catalogue. The supplier should explain the relationship between the offered device and the tested qualification family. This is a shortlist of products with evidence, not a ranking of countries or company size.

Link the claim to its basis.

Request the Qualification Basis

Ask for the qualification summary, referenced standard revision, tested construction, sample and lot information, results and any declared exceptions. A cover page without that scope cannot establish which product was evaluated. Where proprietary construction information is restricted, arrange an appropriate confidential exchange rather than substitute a marketing brochure.

AEC-Q101 addresses stress-test qualification of discrete semiconductors. AEC does not operate a board that certifies parts; supplier qualification and customer acceptance remain distinct. The AEC-Q101 base document provides the relevant framework.

A historical report needs continuity.

Connect the Report to Current Supply

Establish whether the production offered today uses the construction and manufacturing route covered by the evidence. Ask how changes to die, assembly materials, sites or test methods are evaluated and communicated. A report date alone cannot answer that question.

For a family-based claim, retain the supplier’s rationale connecting the candidate to the qualification vehicle. Procurement should be able to trace the purchase option to that rationale. Avoid silently accepting a different package or source after the technical shortlist has been approved.

Qualification is one input.

Keep Application Approval Separate

Qualification evidence does not prove compatibility with every automotive circuit. The customer still needs to evaluate voltage stress, current waveform, cooling, connection, operating environment and system requirements. A high junction-temperature rating is not a substitute for this work.

Agree what submission and release records the customer requires before ordering production quantities. If a candidate is appropriate only for an industrial project, preserve that limitation in the purchasing record. Do not promote the same entry to automotive use merely because a separate product from that manufacturer is qualified.

Record an actionable decision.

Use Clear Shortlist Decisions

Use explicit decisions: evidence complete for the specified claim, clarification required, or outside the requested scope. Assign an owner and due date to each missing item. A candidate awaiting information should not appear identical to a released source in an ERP search.

For a POWERSi inquiry, provide the exact automotive requirement and candidate code so the available model-specific evidence can be assessed. This article does not designate any POWERSi model as AEC-Q101 qualified or supply a blanket list of certified manufacturers.

Key Takeaways

• A shortlist needs product identity.
• A historical report needs continuity.
• Record an actionable decision.

Conclusion

Build the shortlist around traceable product claims. For available options, contact POWERSi with the required qualification scope and complete application requirements.

FAQs

Is an automotive catalogue enough?

No. Link the exact offered device to its qualification evidence and production scope.

Does AEC issue a universal supplier certificate?

AEC-Q101 is a qualification framework; AEC does not run a board to certify parts.

Can one family report cover a candidate?

Potentially, when the supplier provides a valid family relationship and applicable evidence.

Does a qualification report approve my circuit?

No. Application approval remains a separate customer decision.

What should be recorded for an unresolved claim?

The missing evidence, responsible contact and decision status for the exact ordering code.