Electronics Forum | Wed Apr 06 08:27:12 EDT 2011 | kaschliman
Our two component suppliers use 99.5Sn/0.5Cu and 97Sn/3Ag solder (respectively) for tinning their leads. We use 98.9Sn/.66Cu/.33Ag solder in our wave solder machine. Is there any significant advantage to either tinning process regarding solderabili
Electronics Forum | Sat Apr 04 19:17:23 EDT 2015 | sync40
Hello to everybody. Does someone have some experience or review in the past with roller tinning machines? I mean low cost machines with two rollers and a molten solder tank. The finished soldermasked PCB pass through the rollers (like a lamination)
Electronics Forum | Sat May 17 09:12:50 EDT 2008 | davef
Lead-free means expensive tin. Tin is an excellent solvent. So, metal parts in contact with molten tin must be expensive enough to resist that nature of tin. To learn more about this: * Search the fine SMTnet Archives * Look here: "Liquid Tin Corrosi
Electronics Forum | Tue Dec 08 12:44:52 EST 2020 | janwillemreusink
Who is using two sorts of tin in one selective soldering machine with to solder pots? So then the soldering program selects the correct pot (tin). What are the risks? Adding wrong tin in the wrong pot. Mixing up the nozzles?
Electronics Forum | Tue Feb 16 14:19:29 EST 1999 | Steve Gregory
Hi Kris!! There used to be a company named Fancourt Industries that sold tools that would "recondition" leads...but I did a pretty throrough NET search and they didn't show up...hmmmm, must've went out of business or they got bought... A
Electronics Forum | Thu Dec 17 18:24:37 EST 2020 | SMTA-64387520
We use both in our selective soldering machine. Training is the most important concern. As long as you have well trained operators the risk is minimized.
Electronics Forum | Wed Jan 20 07:11:01 EST 2021 | janwillemreusink
Thanks for replying... Unfortunately (or not) it isn't relevant anymore. Due to the effects of covid-19 we don't have any active aerospace customers anymore so (for now) we're only making leadfree products.
Electronics Forum | Tue Dec 15 14:38:23 EST 2020 | emeto
I have done it different ways on different equipment. 1. Remove alloy one from the machine. Add alloy two only. and use it.For next board, do the same. 2. There are machines with separate sections for PB and PC-Free, so pots are away from each other
Electronics Forum | Thu Dec 10 12:12:40 EST 2020 | robl
Yep, done it previously with a multipot machine. Using with wirefeed to top up the pots means you only have a contamintion risk when you fit a new top up reel. Used separate nozzles for both, but theoretically using titanium nozzles would mean no c
Electronics Forum | Sat Jun 12 19:08:11 EDT 2004 | Ken
Well, it finally happened. A machine Operator did not follow our bar code process and "grabbed a tube of solder paste" and guess what. Built 250 assemblies with LF paste when it should have been Tin/Lead!!!! SOLDER PASTE SUPPLIERS: can you make t
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