Electronics Forum | Mon Jun 10 13:31:29 EDT 2013 | emeto
Is there anything on the other side of the board? If not the process will be very standard. 1. SMT - place the small parts on your board. It is called surface mount technology. Basically one machine applies solder paste on the board, another machine
Electronics Forum | Mon Jul 29 19:39:57 EDT 2013 | hegemon
No problem running lead free without nitrogen. Careful profiling will take care of the soldering. Cosmetically, the Nitrogen reflow is superior for lead free, and we see much better wetting, better coverage of the PWB pads, and of course the smooth
Electronics Forum | Fri May 11 09:56:58 EDT 2012 | cyber_wolf
Paste control is a subject that has a lot of unfounded claims surrounding it. What is the difference in having a "working paste jar" and a "new paste jar" Either way new and old are getting mixed at some point. We just don't buy onto the whole thing
Electronics Forum | Thu Jul 26 13:17:45 EDT 2001 | Hussman
Most solder paste manufacturers will take a reasonable amount of paste back, just so they won't loose your business due to bad paste. But if you're asking to ask to ask - separated paste from flux is not a bad thing if the jar was never opened. Pas
Electronics Forum | Tue Oct 09 08:30:22 EDT 2007 | davef
As a starting point, follow the guidance of your paste supplier: http://www.aimsolder.com/tds/WS%20353%20Sn62%20&%20Sn63%20Solder%20Paste.pdf
Electronics Forum | Wed Oct 27 11:50:36 EDT 2021 | proceng1
I'm not clear on your current process. You run FIRST SIDE. Then paste and build SECOND SIDE. Then you insert a header from the FIRST SIDE so the pins solder with paste on the SECOND side. And you run the board with the unsoldered header on the bot
Electronics Forum | Thu Aug 12 22:31:10 EDT 1999 | Dave F
| Hello, | | Can any netters suggest what critical parameters should be considered & what are there assoicated impacts for a solder paste printing process ... | | B.Regards, | Felix | Felix: There are some 30 variables that affect SMT solder qua
Electronics Forum | Wed Oct 29 18:18:34 EDT 2014 | jorge_quijano
Hola Grayboard, I've had the same situation with these components, I changed the stencil apertures a little bit and use a stepped stencil (5-6mil), after some trials we were able to get decent yields, but we still had some failures, what we discover
Electronics Forum | Tue Mar 01 15:13:22 EST 2011 | felixgutierrez
Hi Everyone. I would like your input in regards to lead free solder paste lead free. Which one is the most reliable solder for BGA's and BTC's (QFN). I have used different type of solder and on some of them i get big voids on BTC's and other one i g
Electronics Forum | Tue Apr 10 13:43:13 EDT 2001 | mparker
since you did not define what visual process you are inspecting with I will ask is this "grainy" appearance being detected with the naked eye only? Are you using magnification? if so, what power? Is this a SMT solder or through hole solder problem?
.gif)
