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What IPC/WHMA-A-620 Means For Harness Quality

Written by Andy Dahl

The spec that defines pass/fail for harness workmanship, inspection and testing

IPC/WHMA-A-620 defines criteria for cable and wire harness quality across industries. It sets acceptance classes: Class 2 for general/industrial use and Class 3 for high-reliability equipment like medical and defense.

Inspectors ensure quality by checking visual features, measuring dimensions, and conducting tests like continuity and pull-force. Clear class designations help avoid ambiguity, ensuring high-quality, repeatable production.

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