repair en
Flux
repair
Plain-language definition
Plain-language definition
A chemical aid that helps solder flow and bond to clean metal.
Why it matters
Using the correct flux reduces bridges and cold joints, while residue may require cleaning according to its chemistry.
Technical detail
Flux removes surface oxides during heating and limits new oxidation, improving solder wetting and joint formation.
Examples
- Applying electronics-grade flux helps a replacement connector pin accept solder.
Related terms
Sources and review
Reviewed July 12, 2026 by [email protected]. Next review due July 11, 2027.
- Soldering Glossary of Terms — iFixit Accessed 7/11/2026
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