Buy lead free solder paste syringe at Europe - Page 1
Forum section: electronics / general

author: metRo_
author_rank: Regular Contributor
timestamp: June 02, 2014, 12:50:45 pm
content: Hi,Where do you buy your solder paste syringe at europe? From a recognized brand I found it to be the cheaperhttp://pt.farnell.com/chip-quik/smd291ax10/solder-paste-63-37-183-deg-10cc/dp/1850223Do you recommend a cheaper one?That one lookshttp://www.microbuilder.eu/Images/manpaste_syringepaste.jpgfrom this articlehttp://www.microbuilder.eu/Tutorials/SMTSoldering/SolderPasteByHand.aspxlooks nice O0 but can't find it anywhere!

author: nanofrog
author_rank: Super Contributor
timestamp: June 02, 2014, 01:50:57 pm
content: FWIW,Nordsonis the brand of paste in the pic you linked (particular tube is SAC305). Farnell carries ChipQuik brand for 24-25EUR.Is there a specific reason to use lead-free?I ask, as you'll get better results from 63/37. Not sure on a cheaper source in Europe though, and syringe sized packages tends to limit your brand selection (i.e. Kester and Multicore only offer large containers). There's a company here in the US that repacks Kester EP256 in syringes, so there might be such a thing available to you more locally.Worst case cost wise, ChipQuik happens to be excellent quality, comes in hobbyist friendly sized syringes, and is available to you.

author: metRo_
author_rank: Regular Contributor
timestamp: June 02, 2014, 04:09:46 pm
content: Isn't lead dangerous?

author: nanofrog
author_rank: Super Contributor
timestamp: June 02, 2014, 04:30:17 pm
content: Quote from: metRo_ on June 02, 2014, 04:09:46 pmOnly if you eat it.Just wash your hands when done (or before consuming any food).If you need to store your solder paste in the same refrigerator as food, stick it in a sealed plastic container of some sort.Also, if you weren't already aware, the fumes from soldering are from the flux, and do not contain lead (or any other metal). You don't want to inhale if you can avoid it, and a fan blowing it away from you will solve that issue (ideally, blow it away from you out of an open window).

author: metRo_
author_rank: Regular Contributor
timestamp: June 02, 2014, 04:34:22 pm
content: What would you recommend me from here:http://pt.farnell.com/jsp/search/browse.jsp?N=203806&Ns=P_PRICE_FARNELL_PT%7C0&suppressRedirect=true&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D203806%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Dpt_PT%26divisionLocale%3Dpt_PT%26catalogId%3D%26skipManufacturer%3Dfalse%26skipParametricAttributeId%3D%26prevNValues%3D203806

author: nanofrog
author_rank: Super Contributor
timestamp: June 02, 2014, 04:47:23 pm
content: ChipQuik SMD291AX10(35g of 63/37, no-clean flux).The other 63/37 uses water soluble flux, and I don't recommend using that type of flux (have to get it cleaned off within hours, and thoroughly, or it will cause corrosion).

author: metRo_
author_rank: Regular Contributor
timestamp: June 02, 2014, 05:41:43 pm
content: Just one more question, in other topic I talked about a problem I got with my actual solder pastehttps://www.eevblog.com/forum/projects/solder-paste-black-product-appear-under-components/to clean the flux what should I use? Anything that I can buy from farnell or normal alcool is ok?

author: nanofrog
author_rank: Super Contributor
timestamp: June 02, 2014, 06:37:03 pm
content: Quote from: metRo_ on June 02, 2014, 05:41:43 pmAlcohol will work rather well, and is fairly inexpensive (IPA, ethanol, ordenatured alcohol). Methanol can be used as well, but some indicate it leaves a residue. Paint stores could potentially be local sources BTW (where I get most of mine).IF it's a bit heavy, mechanical scrubbing and even scraping prior to any solvent will help make a faster/easier job of it (use anESD brushof some sort, not a toothbrush). Dental picks, wood sticks (orange sticks), and nylon spudgers work great for scraping. And if it's particularly stubborn, you can add some acetone or xylene to it as well (20% by volume seems to do well IME). Past this, you may have to sort to straight xylene or acetone for example (there are other solvents that work too), just use it sparingly only where you need it. Rinse these areas in alcohol when done.There are a few threads in here that cover this at least. Here's a couple to get you started.This particular thread covers flux cleaners and as well as other chemicalsmembers tend to keep on hand and what they use them for (might offer a few ideas).Acetone(this one focuses on DIY flux mixtures, and also mentions some commercially available ones if you'd rather take that route).

author: metRo_
author_rank: Regular Contributor
timestamp: June 02, 2014, 07:49:29 pm
content: I was using a toothbrush lool Will read that, thank you