Water Wash Flux
Before no-clean fluxes became the most commonly used materials in wave soldering, water wash fluxes had an extended run as the preferred material. The advantage of water wash fluxes is that they can be formulated to be very active so that they can solder virtually any assembly without a concern for reliability, since the residue will be removed after the soldering process. The disadvantage of water wash fluxes is that assemblers must have an additional piece of equipment, the water wash system, to remove the flux residue, and must deal with the effluent.
Neutral pH fluxes can generally be left on the circuit board for extended periods of time before washing, while the "low" pH fluxes generally solder somewhat better.
|1085||Low||12.4||0.860||ORH0||ORH0||< 50 ppm||Foam||16-1085||Water Wash, Halogen Free, Lower Solids|
|1095-NF||6.8-7.2||19.5||0.838||ORH1||ORH1||< 4.5%||Foam||16-1000||Water Wash, Neutral pH|
|1081||Low||28.4||0.957||ORH0||ORH0||< 50 ppm||Foam||16-1081||Preferred, Heat Stable Water Wash Halide-Free|
|1010||Low||20.0||1.055||ORH1||ORH1||~ 4.5%||Foam||N/A||High Activity Water Wash VOC-Free|
Fluxes are available in 1-gallon and 5-gallon containers, and 55-gallon drums.
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Water Wash 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.
Application Engineers read data for trends - providing better long-term answers.
Not all fluxes can handle the high processing temperature required for Au/Sn solder preforms.
From One Engineer to Another®
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