When a component is constrained or you are buying from the open market, you stop buying a part and start buying assurance. The price on the quotation is only one variable; the other is whether the parts you receive are genuine, correctly marked and electrically good. A disciplined qualification process is how you protect a build that may ship for years.
Documents to request up front
- Certificate of conformity / material declaration — confirms the part identity and, where relevant, compliance.
- Lot and date code — so you can verify production history and check lot consistency across the shipment.
- Original manufacturer marking — to compare against the genuine top-mark and reject obvious mismatches.
Inspection options by risk level
| Risk level | Recommended check | When it applies |
|---|---|---|
| Low | Visual inspection + date-code verification | Common commercial parts, non-safety |
| Medium | + X-ray for bond/wire integrity | Higher-value or older devices |
| High | + Decapsulation and electrical test | Safety-critical, long-life or aerospace |
Build a per-lot record
Keep the CoC, date code, inspection report and the supplier's identity together for every lot. If a failure appears eighteen months later, that record is what lets you trace it to a source and claim against it - and what lets you prove to your own customer that the part was screened.
Our approach
We are an independent distributor, not an authorised distributor or representative of Artery or any manufacturer named here; we state that plainly because the distinction matters for warranty and traceability. What we offer is availability, inspection options and honest documentation. For the AT32F413, AT32F403A or AT32F423 you need qualified, we recommend starting with a sample so your team can verify before volume. Send your list via the MCU range enquiry.
Frequently asked questions
What documents should I request with an AT32 batch?
At minimum ask for a certificate of conformity (CoC) or material declaration, the lot or date code, and the original manufacturer's marking. For critical applications, request inspection evidence: visual and microscopy, X-ray for wire-bond and die integrity, and electrical test data against the datasheet.
Why start with a sample before committing to volume?
A small first order costs very little and tells you a great deal. You can confirm the marking, package, date code and basic electrical behaviour on your own bench before a larger sum is tied up in inventory you have not verified.
How do I reduce the risk of counterfeit or refurbished parts?
Buy from suppliers who can show you the actual goods and traceable sources, verify the date code against the part's production history, and keep records per lot so any future failure can be traced to its source. Independent inspection and a sample-first policy are far more reliable than trust alone.
What is the role of an independent distributor here?
An independent distributor is not an authorised source and does not carry a manufacturer's warranty, but it can offer availability, honest documentation and inspection options when the authorised channel is constrained. The value is transparency about what you are receiving and where it came from.
About us & trademarks: JTDZ Tech (Shenzhen Jingteng Electronics Technology Co., Ltd.) is an independent distributor of electronic components. We are not an authorised distributor or representative of the manufacturers named in this article. Manufacturer and part names are used for indicative purposes only, to help identify the components discussed; all trademarks remain the property of their respective owners. Always verify specifications against the manufacturer's datasheet before design-in or purchase.
Recommended next steps
If you are sourcing any of the parts mentioned in this guide, we can help you confirm stock, pricing, and lead times quickly.
- Upload your BOM — send your full parts list and receive a consolidated quote within 2 business hours.
- Browse related in-stock lines: Power Management ICs · Microcontrollers / MCUs · Memory / Logic Devices.
- Contact our team for hard-to-find or end-of-life components.
