Defluxing
Defluxing is the process of removing soldering flux residues from printed circuit boards after the soldering process. The procedure typically uses specialized cleaning chemistry combined with spray pressure, heat, and rinsing to eliminate organic and ionic contamination from electronic assemblies.
Why it matters
Flux activators used during soldering are chemically active and may degrade long-term reliability if left on assemblies. Proper defluxing ensures electronic devices meet cleanliness and reliability standards.
How cleaning solves the issue
Cleaning chemistries are designed to dissolve rosin, synthetic, or water-soluble flux residues while preventing redeposition. Automated cleaning systems provide repeatable and controlled contamination removal.
FAQ
It depends on reliability requirements and the type of flux used.
Inline or batch cleaning systems are commonly used in electronics manufacturing.