Electronics Forum | Thu Sep 19 11:14:45 EDT 2002 | Jim M.
We had lots of problems with bridging on 15.8mm pitch, QFP17-160 at the start.The board was .032 thick, double sided-six boards to a panel. Here is the problems (not neccessarily in the biggest to little but as i remember them) and solutions that he
Electronics Forum | Wed Aug 07 08:49:35 EDT 2002 | davef
What do you want to be certified? So, do you have a specification control drawing for each component that defines your expected performance capabilities for use by your buyer in acquiring these parts? If there is a reason to fabricate parts to your
Electronics Forum | Tue Oct 11 14:10:51 EDT 2005 | Amol
Hi, I have a very basic question for tin whisker testing. Do I thermal cycle/age the Components only or solder them to a ckt board and then thermal cycle/age the PCB assembly??
Electronics Forum | Thu Dec 12 17:48:21 EST 2019 | davef
You proved that the standard solderability test of components may be effective for assessing aged components. Curious Minds Can you get the authorization to use a more aggressive flux? Will that flux solve the problem? What's it going to cost to qu
Electronics Forum | Wed Oct 03 19:28:58 EDT 2012 | rgduval
Given that you're seeing it on nearly every part, we tend to lean towards Dave's explanation. We wouldn't expect outgassing from the pad to be an issue (at least, we've never heard of it before, which doesn't, necessarily, eliminate it as a potentia
Electronics Forum | Thu Aug 28 11:07:34 EDT 2008 | saaitk
Can anyone please help me out. I am having solderability issues on a 208 pin QFP. I believe that it may be due to the age of the component. The date code states week 50 of 2003 which is not all that far off 5 years. The component was vacuum sealed at
Electronics Forum | Fri Feb 17 05:15:12 EST 2006 | nemachines
Hi We came across a Mydata pick & place TP9 1993 model, We are looking for more infomation on this Model. ie :- Component sizes(From - Too ), centering device For this age machine are they any good. Thx
Electronics Forum | Thu Nov 01 14:40:26 EDT 2007 | ck_the_flip
Electrically testing components is an age-old practice of the past. True "world class manufacturers" like to minimize, or even eliminate incoming inspection of ANYTHING - the theory being....a world class manufacturer should have such awesome relati
Electronics Forum | Fri May 03 18:55:41 EDT 2002 | davef
Interesting situation. Everything [ie, intermetallic compounds, solderability, etc] is speculative without knowing more about the materials of: * Leads. * Solderability protection. ... because suppliers use a fairly wide of materials. Your suppl
Electronics Forum | Wed Mar 29 04:34:14 EST 2000 | Marc
Micheal: Correct me if I am mistaken, but I think you have stumbled onto the age old battle between metric and imperial representations of component packaging. I have to deal with this every day as my machines are metric and the designers use imperia
