VOC-free fluxes use water as the dominant solvent. In addition to limiting the amount of volatile organic compounds (VOC) into the atmosphere, sometimes associated with global warming, VOC-free fluxes are also non-flammable. The disadvantage of VOC-free/water-based fluxes is that they require more pre-heat to drive off the water than similar alcohol-based fluxes. In addition, assemblers must be careful to ensure that the top side of the circuit board is dry, otherwise it could lead to reliability issues in the form of electromigration.
|Formula||Acid #||Solids %||S.G.
|1072||25||5.0||1.017||ORL0||ROL1||< 0.35%||Spray||16-1072||VOC Free high reliability, Solubilized Rosin|
|1075-EX30||30||2.9||1.014||ORL0||ORL1||< 0.5%||Spray||N/A||VOC Free Very Low Solids|
|1075-EXR30||30||4.5||1.015||ORL0||ORL1||< 0.5%||Spray||N/A||VOC Free Moderate Low Solids|
|1075-EXR40||40||5.0||1.019||ORL0||ORL1||< 0.5%||Spray||N/A||VOC Free Low Solids|
|WF-7742||35||5.8||1.014||ORL0||ORL1||< 0.3%||Spray||N/A||High Activity, VOC Free, Low Solids|
|WF-7745||39.5||4.2||1.013||ORL0||ORL0||< 50 ppm||Spray||N/A||VOC Free Halogen Free, Higher reliability|
Fluxes are available in 1-gallon and 5-gallon containers, and 55-gallon drums.
Related Markets and Applications
VOC-Free Flux Technical Documents
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Product Data Sheets
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Flux Blog Posts
You shouldn’t base your solder flux selection on just one data point.
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From One Engineer to Another®
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