Quality Inspection for Electronics From China
1 resources tagged with "Quality Inspection"
Quality inspection on China electronics orders is usually structured around AQL sampling per ANSI/ASQ Z1.4, which tells you how many units to pull from a lot and how many defects allow a pass or reject. The standard splits defects into critical, major, and minor classes, and most electronics buyers run something like 0/2.5/4.0 AQL across those tiers. The mistake is treating the AQL table as the whole inspection — for electronics it's the floor, not the ceiling, because function and component checks sit outside the sampling math.
When you commission a quality inspection, the AQL level and defect classification define what 'pass' means before goods ship. We set lot-appropriate sample sizes per Z1.4 and add functional and component checks, since a lot can pass cosmetic AQL while hiding wrong parts or firmware.
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FAQ
What AQL level should I use for electronics inspection?
A common setup is 0 critical / 2.5 major / 4.0 minor under ANSI/ASQ Z1.4 General Inspection Level II. Tighten the major/minor limits for high-reliability products, and always pair AQL with functional testing for electronics.
How big is the inspection sample for a typical lot?
It scales with lot size per the Z1.4 tables — for example a few thousand units at Level II pulls a sample of around 125–200 pieces. The table also sets the accept/reject numbers for each defect class.
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