Electronics Forum | Mon Jun 02 15:51:17 EDT 2014 | sync40
Thank you so much again davef for your new reply. This past weekend I was looking for more information regarding this subject, but, as you stated there is no information about thioruea concerns during assembly soldering operations, mainly focused in
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 | 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 | 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 | 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 | Fri Aug 26 09:57:21 EDT 2005 | russ
The Immersion gold is not a problem with BGAs specifically but "black pad" which can be present anywhere. The unfortunate thing with BGAs is you cannot see it. Personally I hate white tin. It is okay for single sided boards running no-clean, but c
Electronics Forum | Fri Aug 26 09:48:11 EDT 2005 | David
I have heard that there are problems using immersion gold on PCBs when working with BGAs. Is this correct? Is white tin more suitable?
Electronics Forum | Fri Jul 06 12:39:01 EDT 2007 | blnorman
What's the metallization on the board? We use an immersion tin board and had to increase our profile to successfully solder.
Electronics Forum | Fri Aug 26 14:15:16 EDT 2005 | David
Where could I find more information regarding the double sided reflow and flux problems with white tin?