Electronics Forum | Wed Mar 21 21:28:22 EST 2001 | davef
We have RF boards with ... * No solder mask * Strategically placed globs of solder It's possible that your boards will not work with NC flux res on them. We generally don't see noise problems. We loose one of the edges [front I think, but don't
Electronics Forum | Thu Nov 03 08:34:25 EST 2005 | Slaine
Hi We currently use a small amount of Alloy : 43Sn 43Pb 14Bi Flux: RMA-51AC, Metal : 88.5%. We use it for reworking a product and only consume about 100g per year, we are in the middle or ordering in some more paste but the MOQ is 500g. Is it possibl
Electronics Forum | Wed Jan 08 08:20:52 EST 2014 | emeto
To most of our boards I give 20-30% tolerance in both directions. From experience if you have big aperture on your stencil, the squeegee will scoop certain amount of paste from this aperture and you will see lower height. Depending on your board supp
Electronics Forum | Thu Apr 29 11:07:03 EDT 2004 | arcandspark
You are right about the very poor support for smaller customers. I had told them we were looking for another paste and now they have sent the reginal manager and the US sales manager has come by to see what they can do for us. All they keep saying is
Electronics Forum | Mon Apr 12 15:52:12 EDT 2004 | wgaffubar
I am using Indium 92J type 4 solder paste due to a BGA site with .008" pads and stencil opening of .009" square and .005" stencil thickness. When I try the type 3 we get insuffecient print. The aspect ratio tells me that I should be using a type 4. T
Electronics Forum | Thu Apr 26 10:07:06 EDT 2007 | realchunks
Hi Dub J, I have worked for a few companies that did 3D sampling and found the data they produce to be useless. In the real world they are slow, so that means you won't sample every board. Now if you're not sampling every board, and you start to r
Electronics Forum | Wed Mar 21 18:32:45 EST 2001 | Steve
The design engineers I work with are blaming some circuit problems on what they think might be related to the no-clean flux residue. (It couldn't be the design.) Has any body else seen noise issues in high speed circuits related to no-clean flux resi
Electronics Forum | Tue Apr 13 14:41:20 EDT 2004 | arcandspark
The problem is T.I. does not want us to use Water Soluable, only No Clean. ALso yes from your other reply we must work for the same company. We build boards and find out later sales quoted a cost that is much less than what we ended spending to build
Electronics Forum | Tue Apr 20 13:22:28 EDT 2004 | Kary Voegele
Transistion Automation makes a great squeegee blade. I have found that it is superior to the standard steel/titanium blades generally used in production. It is made from gun barrel blue steel. It is more expensive than standrd squeegee blades, but i
Electronics Forum | Thu Apr 26 11:21:26 EDT 2007 | slthomas
Question...when the machine said something was wrong, was it reading something wrong (false failure), or was there a true descrepancy but not one that resulted in a bad connection (bridge or insufficient)? Also, did you perform a DOE on the process
