Electronics Forum | Tue Apr 27 07:50:09 EDT 2021 | jeremy_leaf
@KWalker I think that could be the case. Though I read somewhere a while back that nickel oxidation can be quite tough to remove, even with flux. Am I wrong about that?
Electronics Forum | Tue Apr 27 19:08:04 EDT 2021 | emeto
Jerry, just out of curiosity, why can't you use flux? Flux is essential part of soldering and it is there for multiple reasons. Flux we can also clean afterwords - even No Clean.
Electronics Forum | Tue Apr 27 21:22:57 EDT 2021 | kwalker
The fact that your cleaning didn't really help reinforces that it probably is oxidation. Cleaning won't remove that.
Electronics Forum | Wed Apr 28 15:51:52 EDT 2021 | duchoang
Could you share some pictures? Without any flux or paste, how could you place preforms on pads? SMT Pick and Place ?
Electronics Forum | Wed Apr 14 13:39:08 EDT 2021 | SMTA-64387124
I am working with a CM in Taiwan and we are seeing significant differences between the paste printing bon the forward stroke vs the backward stroke. Print parameters are the same (pressure, speed, snap off speed) but there is a significant difference
Electronics Forum | Thu Apr 15 15:27:20 EDT 2021 | emeto
Hello fellow experts, can you please recommend a software for stencil design. We want to add our internal stencil design guidelines in it and generate stencil design gerbers here in house. Any feedback will be appreciated.
Electronics Forum | Fri Apr 16 10:10:57 EDT 2021 | oxygensmd
GC-CAM or Soft-tronix stencil design or vay-soft design and there are many software for this solution. As I know most of stencil maker are using GC-Cam which have output file option for laser cutter too.
Electronics Forum | Tue Apr 27 19:13:04 EDT 2021 | astarotf
Solder balls, can be excess paste by opening ST. Do you see the curve still working pasty with lead with alloy "63Sn / 37Pb alloy" has defects?
Electronics Forum | Fri Apr 16 19:32:07 EDT 2021 | mcoass
Hello, I have a very strange problem in a Delta 3 vitronic soltec, drops of tin are fired from the solderpot, I already adjusted the flux profile but these tin stains continue to appear, B.R
Electronics Forum | Tue May 18 10:35:11 EDT 2021 | kumarb
Hi. See this thread which may help you: https://smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=22839Message85508