Vapor degreasing for electronics
Vapor degreasing uses vapor-phase solvents to dissolve and carry away contaminants. Modern low-global-warming-potential (GWP) solvents and closed-loop systems make vapor degreasing viable for sensitive electronics.
Vapor degreasing process overview
Solvent is boiled in a sump to create a saturated vapor zone. The cold PCB acts as a condenser, so vapor condenses on the PCB, dissolves residues, and drains back. This is often followed by a secondary vapor rinse or heated drying.
Key steps
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solvent boil to produce saturation
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condensation onto cooler PCB removes residues
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controlled drain and solvent reclamation
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optional heated air or vacuum drying
ZESTRON evaluates solvent choices and process controls to ensure compatibility with modern components and environmental standards.
Advantages of vapor degreasing
Vapor degreasing provides excellent cleaning for very hydrophobic residues, oils, and greases, with minimal water use and rapid drying. It is effective for assemblies where immersion rinsing is impractical.
Advantages
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excellent for non-polar contaminants
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minimal surface tension issues and no water spots
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fast drying with low residue risk
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closed-loop options reduce solvent consumption
Regulatory and safety considerations are important; ZESTRON advises on solvent selection and control measures to meet environmental and health requirements.