Quality

PFMEA and control plans help buyers turn PCB assembly, wire harness, and box build risks into measurable factory controls before pilot release.

Clean-looking boards can still carry ionic residue that drives leakage, dendrites, corrosion, and coating failures. This guide shows buyers when to require cleanliness controls, which test methods answer which question, and what to lock before release.

IPC/WHMA-A-620 is one of the most cited cable-assembly workmanship standards, but buyers still approve suppliers with vague claims and weak evidence. This guide explains what the standard covers, what it does not cover, and what records OEM teams should verify before release.