Evidence coverage
Failure modes
solderability degradationsurface-finish defects
Materials
HASLsolderprinted wiring board
Analytical methods
surface-finish evaluationsolderability assessment
Public evidence metadata ยท SEM-EVIDENCE-0012
This paper covers HASL finish on PWBs and fits the practical process side of the SEM Lab paper catalog. It belongs with the papers that help engineers evaluate assembly-related materials and process conditions before those conditions turn into field or manufacturing failures. The paper should be positioned as a useful reference for engineers dealing with solderability, surface-finish quality, and the effect of board finish condition on assembly results and longer-term reliability.