Electronics Forum | Tue Sep 19 22:45:19 EDT 2006 | darby
Larry, The Quad is based on the Samsung - yes? If so, here are the final recommended answers from Samsung. All LM guides and bearings, ball splines and rack and pinion use Shell Alvania EP2. Sometimes called LF2. Sometimes called Albania. It's a dar
Electronics Forum | Wed Apr 09 17:39:30 EDT 2008 | diesel_1t
Hi. I know that this is one of the mos common threads here, I have been doing some research, but i didn't find any similar. The main issue is that I have seen tombstoning since two weeks ago, it is more characteristic on 0603 resistors (Stackpole e
Electronics Forum | Wed Dec 08 11:26:04 EST 2010 | davef
3 Printer Area Conditions * As stated earlier, heat and humidity are damaging to solder paste. Ideally, the printing area should be maintained at 40% - 50% relative humidity and 72°- 80°F (22-26°C). In addition, no air (cool or warm) should blow dire
Electronics Forum | Mon Jun 19 09:47:23 EDT 2017 | georgetruitt
You have a lot to think about! What does the flux manufacturer recommend as far as specifics like water temp or pressure? Do they recommend high temp di-water a detergent or saponifier? Do you currently have a cleaning machine, batch cleaner or inl
Electronics Forum | Wed Feb 23 20:25:17 EST 2000 | Chris Wallace
Like all who post messages here, I'm looking for a little bit (well, maybe a lot of bit) of help. We're currently going through a redesign of a board which will utilize several FPGAs. The manufacturer (Xilinx) recommends using solder mask defined p
Electronics Forum | Thu Feb 10 13:54:22 EST 2000 | Kris W
Hi All, We are in the process of converting from RMA solder paste to no-clean process across the shop. This will allow me to carry my semi-aqueous cleaner out of the building and set it ablaze using the terpenes as the fire water. Then I can go ab
Electronics Forum | Sat Jan 06 10:12:51 EST 2001 | Dave F
Vinyl ESD floor tiles are probably the most expensive approach to "permanent" flooring, about $8 a square installed. VPI and 3M are reputable suppliers. Let me digress on ESD floor "waxes", the earlier poster�s comments are well taken, but the bigge
Electronics Forum | Thu Dec 14 20:04:36 EST 2000 | Dave F
Probably all of us are seeking more and better information to help us do our jobs better. But ... * Oftimes trade journals are so busy with adverts that the technical message gets somewhat lost. * It�s tough to get the information from trade journal
Electronics Forum | Sun Feb 23 14:32:42 EST 2003 | davef
Sources of sulphur in PCB fabrication are: * Some locales have high H2S concentrations in the air. * Metal etching steps that use sulfuric acid or a sulfonated buffering compound may result in sulfate residues. * Sulfates can come from contact with
Electronics Forum | Fri Dec 08 19:08:52 EST 2000 | Mike Konrad
I do not know which specific flux you are using, but here are some general guidelines. If your wave soldering machine uses a foam fluxer, then there are foaming agents in the flux. Under �normal� conditions, the volatiles (including the foaming age
