Electronics Forum | Fri Jul 26 05:14:38 EDT 2013 | anilw2006
We had a solder joint problem in gold plated PLCC68 ic. We do double sided reflow process with Cookson OL107F paste. First we do top with paste and second with glue process.The solder joint shape and wetting looked normal.In the process of testing
Electronics Forum | Thu Oct 31 02:43:55 EDT 2013 | hqew2013
The smallest finished hole available for 2 layer board is .020”. The smallest finished hole available for 4+ layer board is .014”. All holes are round and drilled through from top to bottom layer of board. No blind or buried vias. For holes = .15
Electronics Forum | Wed Nov 13 18:00:59 EST 2013 | davef
It's too bad that SMTnet won't let us view your pdf. I asked the geeks to fix that. If someone really want to read it Matt can likely get it off to you. Is it OK to do that, Matt? Anyhow, the Trace Labs report seems to be focused on some SMT pad dis
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 Jan 09 19:55:14 EST 2014 | padawanlinuxero
Hello! I have a problem with one of the products here, we use a pallet to run the board on the solder wave, when the board gets solder and you inspect the board you notice that for some reason the first pcbs that touches the wave are ok, even a litt
Electronics Forum | Tue Jan 14 08:48:09 EST 2014 | davef
I don't know. What does your paste supplier say? You can run tests * That you used to qualify this paste in the first place. * According to IPC J-STD-005A Requirements for Soldering Pastes * Using your toughest stencil to print this paste on a bare c
Electronics Forum | Wed Jan 22 14:25:17 EST 2014 | rgduval
In the purest sense of ESD control, we would have to say yes, use ESD tape to cover the gold fingers. The gold fingers are connected directly to input/output controls for the card, and, as we all know, when handling boards, we're supposed to avoid c
Electronics Forum | Tue Apr 01 16:14:37 EDT 2014 | emeto
Hello, I have newer generation machine(MV-7) and in my software I can open two programs at the same time. After you do that there is a button in the software saying T/B. when you press this button it will run board1(or top side) and right after you
Electronics Forum | Mon Apr 28 15:20:50 EDT 2014 | davef
Your customer is correct. Your supplier has clamped some sort of machine to your butt and has plugged it in the wall outlet. Honest mistake: * IPC-A-600H, 3.3.2 Lifted Lands - (Cross Sections) ... pertains to boards that were cross sectioned after t
Electronics Forum | Mon Apr 28 21:51:56 EDT 2014 | elabcircuits
Hello, We have a MPM UP2000 HiE printer from 2000, software version 7.2E. The PC board is not booting anymore (black screen), no drives spinning. It's an Advantech 486SX version. Question: would a Pentium 3 SBC (Single Board Computer) with ISA
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