Electronics > Beginners

Soldering tip melts

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tooki:
Thanks! I, too, was shocked (shocked!) to discover that not everything on eBay is genuine!  ;D

I did find an MSDS for it under the Burnley name, but it’s from 2009 and hosted on some random website, while the manufacturer’s website doesn’t list it in their MSDS list. So I suspect they retired the Burnley branded product at some point in the last decade. (They sell a different formulation under their own name, with an MSDS from 2017.)

Mechatrommer:

--- Quote from: Psi on February 02, 2019, 02:35:18 pm ---Put the "Burnley soldering paste" (flux) somewhere away from electronics. Anything electronic related that it touches will be damaged, even after a single exposure. Think of it like acid, anything it touches will be eaten away.
Or return it to the shop and tell them its acid flux. If the shop is for electronics only and doesn't sell plumbing supplies then they may have ordered it by mistake

--- End quote ---
i think your statement is an exaggeration or you never used one, only from hearsay. now i dont know about Burnley brand but i've used another brand of zinc chloride flux on electronics before, i've never seen any corrosion related or component level failure so far yet. i used to single pass cleaning with normal thinner and rub with tissue. there are 2 issues that i figured out so far though, one is leakage current through adjacent traces because of few Mega ohm it created, not suitable for sensitive accuracy low current low voltage high impedance circuit. and second is high voltage breakdown, anything greater than 50V i think is a big no no, when it breaks down, it act something like a short. my no brand tip corroded in months of usage though by the neck (upper part of the tip) not right on top of the tip. so something much much more aggresive than zinc chloride must have eaten the OP's tip. but your and anybody's advice on ZnCl unsuitability for electronics is pretty much valid though, because of the said issues, ymmv.

GreyWoolfe:

--- Quote from: Ian.M on February 02, 2019, 02:03:03 pm ---Paste is a generic term for the composition of a substance.  Solder paste is totally different from flux paste (and from toothpaste  :-DD ). 

--- End quote ---

THAT explains why I have dentures now.  Dammit. |O

Ian.M:
Well, if you regularly used  Burnley acid zinc chloride paste flux on your teeth, I'm surprised you have gums left to seat your dentures on!  Do you by any chance resemble a horror movie hillbilly?   :-DD   >:D

Brumby:
My first reaction when I saw "zinc chloride" was

As said above, it is a flux used in plumbing - and it is as old as the hills.

I was first introduced to it by my grandfather when I was just a wee lad, where it was called "killed spirits".  You could make it yourself by dropping pieces of zinc into some hydrochloric acid until the fizzing stopped.  The word "aggressive" in describing its action seems less than adequate.

Using it on anything made me feel uncomfortable, but electrical connections - definitely not!  Steer clear of it.

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