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Water soluble paste flux — Parallax Forums

Water soluble paste flux

NewzedNewzed Posts: 2,503
edited 2007-06-26 11:44 in General Discussion
Does anyone know where I can buy water soluble paste flux?

Thanks

Sid

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Don't have VGA?
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Comments

  • FranklinFranklin Posts: 4,747
    edited 2007-06-23 01:57
    Are you sure you want water soluble (must be completely removed from board) or no clean flux or solder?

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  • kjennejohnkjennejohn Posts: 171
    edited 2007-06-23 06:45
    Well, if it's organic (water soluble) flux paste you want:
    www.smtsolderpaste.com/water_soluble_solder_paste.php

    for starters. I used a Google search on "water soluble paste" and this was practically the first hit on the first page. Try it yourself.

    Hope that helped.
    kenjj
  • NewzedNewzed Posts: 2,503
    edited 2007-06-23 11:36
    Kenji, that link is solder paste, not paste flux.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • NewzedNewzed Posts: 2,503
    edited 2007-06-23 11:41
    Stephen, either one is OK, as long as it is a paste, not liquid.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • RDL2004RDL2004 Posts: 2,554
    edited 2007-06-23 11:59
    www.amazon.com/H-205-Water-Soluble-Lead-Free-Paste/dp/B000CNIK8Y

    Looks like it's intended for plumbing and such so the solder may be acid core, but the flux might work for what you want.

    edit: actually, this may be okay for electronic stuff, they have a different kit specifically for plumbing, and I also found they sell this:

    water soluble paste flux

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    - Rick

    Post Edited (RDL2004) : 6/23/2007 12:07:18 PM GMT
  • ForrestForrest Posts: 1,341
    edited 2007-06-23 12:23
    Google 'Kester TSF' which is a tacky paste flux, and you'll find some sources.

    Kester ONLY makes solder/flux/paste for electronics.

    I'd stay away from anything supplied in a jar because it typically for plumbers and contains acid which will destroy electronics.

    Post Edited (Forrest) : 6/23/2007 12:27:56 PM GMT
  • FranklinFranklin Posts: 4,747
    edited 2007-06-23 14:44
    www.stanleysupplyservices.com/category-leaf.aspx?id=128&page=3

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  • Tracy AllenTracy Allen Posts: 6,666
    edited 2007-06-24 18:22
    Hi Sid,

    Take a look at zephyrtronics no-clean RMA rework flux

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    Tracy Allen
    www.emesystems.com
  • NewzedNewzed Posts: 2,503
    edited 2007-06-24 18:30
    Thank you, Tracy.· Have an order for 30 DS1302 piggybacks and I'm running low on flux.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • Tracy AllenTracy Allen Posts: 6,666
    edited 2007-06-25 01:45
    Here's a tip if you do get that zeph flux. It is sticky like honey and after a while the lid of the jar will tend to stick, hard to open. Wrap the threads on the jar with teflon tape and you won't have any more problem. You can apply the flux with the tip of a toothpick or a pin. It is a very effective soldering flux and I highly recommend it.

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    Tracy Allen
    www.emesystems.com
  • NewzedNewzed Posts: 2,503
    edited 2007-06-25 12:16
    Tracy, on your recommendation I just ordered a jar of the zeph flux - pretty expensive stuff, but if it works well I guess it is worth it.· Is it really No Clean - seems like there would be some sort of residue that would have to be removed.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • BeanBean Posts: 8,129
    edited 2007-06-25 14:14
    I use the Kester flux pens. I use the 186 RMA flux, but they have the 951 No-Clean.
    I like the pens, just pop off the cap and press the tip to dispense the flux (just like those paint markers). And one pens lasts an amazingly long time.

    Digikey has both the 186 and the 951 pens ($4.38 each).

    Bean.

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  • NewzedNewzed Posts: 2,503
    edited 2007-06-25 14:17
    Bean, I have a flux pen but I don't really like it.· The liquid flows too much and doesn't stay localized like the paste flux.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • Tracy AllenTracy Allen Posts: 6,666
    edited 2007-06-26 04:44
    Sid, I think "no-clean" is a relative, term, relative to how clean the particular circuit needs to be and also relative to how much of it you apply.

    A case in point is the crystal on the DS1302. That part of the circuit board should be left very clean. The flux itself is non-corrosive and non-conductive, and much of it will burn off during soldering. However, any sticky residue might attract dust and that could later in time cause problems by loading down the oscillation circuit. But most circuits are not that sensitive.

    Use it sparingly and there should be very little residue. If you use a lot of flux, for example, to help with drag soldering the pins of a fine pitch IC, it may end up with a lot of sticky mess left, unless you use some flux remover on it.

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    Tracy Allen
    www.emesystems.com
  • NewzedNewzed Posts: 2,503
    edited 2007-06-26 11:44
    Tracy, what do you use for a remover - water or isopropyl?

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
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