SparkFun Electronics - Liquid Flux Pen

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Product Info

Liquid Flux Pen - Water Soluble

sku: TOL-08967

Description: This is a water soluble liquid flux pen. A flux pen is a must have when performing any kind of solder rework. The flux is the substance that prevents beading of the solder and helps the solder flow cleanly onto the parts you are soldering. However, flux is mildly corrosive over long lengths of time (months). The water soluble flux will cleanly wipe away after wetting the soldered surface.

Check out our Surface Mount Soldering Tutorials for some great soldering examples!

Be sure to use in a well ventilated area.

Pricing

	155 in stock backorder allowed

$4.95	price
$4.46	10-99 (10% off)
$3.96	100+ (20% off)

	quantity

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Comments

2 comments

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jolshefsky

| September 23, 2009 at 10:43 PM

I tried several varieties of Kester flux and this one is by far the best. It stays liquid for a long time in the tube, it's easy to dispense, and it is an excellent wetting agent for liquid solder (especially the finicky lead-free stuff I'm using).

Its only disadvantage is that it does conduct electricity (a little) when dry, so you really should wash your boards afterward. Well, probably not ... except if you're soldering triacs for use on line voltage because otherwise pretty sparks will result.

Asuraku

+1.6

| December 20, 2009 at 1:28 PM

Always clean your boards! I don't know if it's because I'm IPC certified for class III PTH as well SMT, but even with a Low flux, corrosion can occur. Just make sure you clean off a board with rubbing alcohol and some non-fibrous tissues (Kimwipes are really good). And it helps to use a flux brush (commonly sold at hardware stores for applying acid based fluxes for copper pipes) to scrub with the alcohol. And note that the alcohol doesn't act as a solvent, it just removes the flux from the board and mixes with with the alcohol. Then use the Kimwipes to clean it up.

Happy soldering!