Is mild active rosin flux better for Pb free solder? - diyAudio
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Old 4th May 2013, 11:32 AM   #1
diyAudio Member
Join Date: Mar 2006
Location: New Jersey
Default Is mild active rosin flux better for Pb free solder?

I have Kester 186 and 2331 fluxes. I'm going to start using Pb free solders and was wondering which one of these I should use? 186 is a mildly active rosin flux and is the sort of thing I'm used to, but 2331 is this organic water soluable stuff. Not sure which to use.
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Old 4th November 2013, 06:56 PM   #2
diyAudio Member
Join Date: Dec 2009
Location: UK
Whichever one is compatible with the solder you are using.

Cross check between the solder manufacturer and the flux manufacturer.
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Old 4th November 2013, 07:35 PM   #3
lexx21 is offline lexx21  United States
diyAudio Member
Join Date: Mar 2011
Location: North Carolina
I tried the pb free solder and absolutely hated it. I had trouble getting it to flow properly unless I used a 40+ watt iron. This was the whisker thin stuff, not thick solder at all. Your mileage may vary though since you are probably using a different flux that I did.

What I had (the flux that is) I picked up from Radio Shack a few years back, but soldering with and without it gave me the same results.

Let us know how your results turn out and what you did to achieve them. I sort of hate to waste a pound of solder
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Old 4th November 2013, 07:36 PM   #4
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
I and most other Members report good results with eutectic leaded solder.
regards Andrew T.
Sent from my desktop computer using a keyboard
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