Creep corrosion on uppf lead frame package caused by packing materials

摘要

A NiPdAu-Ag leadframe package was reported with creep corrosion which leads to soldering failure. The DOE experiments narrow down the failure root cause related to the PVC tube packaging material and plating variance. The finding confirms that the corrosion is cause by the PVC black tube releasing chloride vapour during transporting process.