Electronics Forum | Mon Apr 21 10:50:13 EDT 2014 | cyber_wolf
The top PoP part is what gets dip fluxed or dip pasted. We have had warping issues with these components before but it is almost always the top part. My guess would be bad components if your reflow profile and print process is good to go.
Electronics Forum | Wed Apr 30 14:41:55 EDT 2014 | emeto
Thank you all for the posts. From all I read lately I will probably try a different solder paste and if that doesn't work I will go for a flux feeder. I will keep you posted.
Electronics Forum | Fri Apr 11 13:58:32 EDT 2014 | proy
Have an older reflow oven which I need to clean up collected flux residues from the chain, mesh, intake/exhaust areas, slides etc heavy brown dust, likely water soluble residues, lots of polymerized brown resin as well.
Electronics Forum | Tue Apr 15 11:48:14 EDT 2014 | proy
Interesting idea the sprite sugar/water mix.... I found a spray on BBQ cleaner which worked pretty well, but is a little sharp on the lungs! Peter
Electronics Forum | Tue Apr 15 15:49:57 EDT 2014 | davef
"the sprite sugar/water mix" becomes a solvent because the number of carbon molecules in the sugar chain is greater than number of carbon molecules in the flux residue chain. Er, something like that ...
Electronics Forum | Wed Apr 30 18:01:16 EDT 2014 | hegemon
Sprite/Sugar as a solvent?!! I want to clean my oven now! In other words, this I GOTTA SEE. Ain't chemistry great? 'hege
Electronics Forum | Thu May 01 06:42:25 EDT 2014 | cbeneat
I use Simple Green, works pretty well, although I use the concentrate and don't dilute it as is recommended, so it's pretty strong. I am going to try the sugar water though. I'm intrigued.
Electronics Forum | Thu May 01 18:21:26 EDT 2014 | hegemon
Of course now I am really wondering if my own guts like the Sprite/Solvent... 'hege
Electronics Forum | Mon Apr 14 12:17:42 EDT 2014 | kkay
Does anyone have an EMC Spirit II stencil cleaner and could provide insight on it? We were thinking of purchasing a used one. Thanks!
Electronics Forum | Tue Apr 15 14:19:19 EDT 2014 | horchak
This does not look difficult. It appears the rectangle of proper size and spacing would work for both, or even a square pad. Don't make it more difficult than it should be. But then I could be missing something?
