Electronics Forum | Tue Jan 30 17:58:49 EST 2007 | flipit
Hi, I would not be too concerned about what the shape of your wirebonding fiducial is. Cross, Square, Diamond, Circle, will all work well for you. I use a "+" and a diamond. Your machine magnification will be great, so don't make the fiducials to
Electronics Forum | Tue Feb 09 23:40:19 EST 2010 | glennster
OK Sergey, looks like no one wants to take this on. I will give it a shot and maybe others will add their 2 cents. The answer depends on what you want to inspect. X-ray inspection is based on the X-ray absorption properties of the materials in th
Electronics Forum | Wed Apr 07 22:15:31 EDT 2004 | davef
We're not familiar with the AUG5 from Taiyo. [It doesn't show on their US site.] Is it liquid photoimageable? Printed solder masks are more likely to bleed. But you wouldn't have any solderability with bleed. Your plating seems acceptable [if th
Electronics Forum | Tue Feb 20 16:31:49 EST 2001 | davef
Let�s be basic. The two most common causes of BGA opens that we talk about here are: 1 Gold thickness and 2 Black pad. Given the thickness of gold that you talking about, it�s reasonable to consider thickness as the first alternative to investigat
Electronics Forum | Thu Sep 19 21:23:42 EDT 2002 | davef
I'm not saying that an eraser will necessarily work. What I'm saying is that some erasers may cause more trouble than the eliminate. Look here http://aic.stanford.edu/jaic/articles/jaic28-02-003_2.html We prefer a brand called Ruby Red. The "ole
Electronics Forum | Wed Sep 23 13:27:55 EDT 1998 | Dave F
All y'all, We use two methods to secure/stake jumper wires to boards: 1 Jumper wires that "magically" bond themselves when heated with a "U" shaped tip on a soldering iron. 2 Loctite 382 Tak Pak We use Tak Pak "99&44/100ths" more often than the "magi
Electronics Forum | Fri Oct 05 16:05:58 EDT 2001 | seand
Hello everyone, Your chief variable here is going to be your epoxy. Different materials react accordingly to various inspection methods but, DEPENDING on your print parameters and material, you may be able to utilize an inline inspection machine.
Electronics Forum | Fri Nov 13 23:33:33 EST 1998 | Kallol Chakraborty
| | | I believe that gold fingers on my circuit boards are being | | | contaminated and need to clean them with some chemical | | | solution. Any recommendations. | | | | | Chuck: What is the type and source of your contamination? Dave F | | We a
Electronics Forum | Mon Jan 07 17:51:34 EST 2008 | jmelson
The clear plastic packaging for LEDs is a LOT softer thermoplastic than the thermoset epoxies used on ordinary chips. I think people have had high failure rates when reflowing LEDs in all-plastic packages even at SnPb temperatures, and much worse at
Electronics Forum | Fri Oct 14 12:03:32 EDT 2011 | fborja3
I want to start an assembly that may require use of SMT machines such as SMT assembly, bond wire, Xray and PCB fabricator machines. I apologize I am not to savvy with the technical names such as the above but I just want something not to costly or e
