Electronics Quality Control in China
2 resources tagged with "Quality Control"
Quality control for electronics goes well past AQL cosmetic sampling — the failures that actually hurt are component substitution, counterfeit ICs, and firmware that differs from what you approved. A factory can pass a visual inspection while quietly swapping an approved regulator for an unmarked clone, or flashing an older firmware build. Engineering-level QC means cross-checking BOM parts against the approved vendor list, verifying lot/date codes, and confirming the firmware hash on shipped units, not just counting scratches.
When you run QC on China-made electronics, the high-value checks are invisible to a standard inspector: part authenticity, BOM conformance, and firmware integrity. We add component verification and firmware checks on top of AQL sampling, because the costly surprises live in the parts you can't see in a photo.
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FAQ
Is AQL sampling enough for electronics QC?
No. AQL catches cosmetic and assembly defects but not component substitution, counterfeit ICs, or wrong firmware. For electronics you need engineering-level checks — BOM conformance, part authenticity, and firmware verification — layered on top of AQL.
How do I catch component substitution at the factory?
Verify shipped parts against your approved vendor list, inspect lot/date codes and markings, and X-ray or decap high-value ICs when prices or markings look off. Substitution is most likely on parts the factory can buy cheaper elsewhere.
What are the most common costly QC failures in China sourcing?
Component substitution, counterfeit parts, firmware mismatch, and undisclosed engineering changes account for most expensive surprises. They pass cosmetic inspection but cause field failures, certification problems, and recalls.
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