Electronics Forum | Mon Apr 19 10:52:05 EDT 2010 | esca
Hi, if you want to verify the gold contamination, is mandatory to use the XPS and FTIR analysis, but is difficult think about a gold contamination from 3 different manufacturers. Do you have cleaned the PCBs after an erroneous screen process ? If no
Electronics Forum | Tue Aug 23 16:48:29 EDT 2011 | jax
assuming Sn05Pb93.5Ag1.5 Without knowing what you are trying to solder, PTH or SMT, the time might not be that far off. Does that time include stripping, cleaning, plating the leads prior to soldering onto the board?... pre-tinning the board as well
Electronics Forum | Mon Jun 09 14:09:06 EDT 2014 | jorge_quijano
Hola... I'm in the middle of a project to reduce assembly time in one of our products, this product has a lot of TH connectors to be soldered by hand, I'm implementing PHIR, first run has been completed, the appearance of the solder joints are obvio
Electronics Forum | Tue Feb 19 10:47:47 EST 2019 | rgduval
I'm with Steve. Check the datasheet, and make sure that the terminations are meant for solder application, and not conductive epoxy. I had that happen a year or so ago with an MLCC. Drove us nuts for two days (not to mention the significant rework
Electronics Forum | Thu Apr 19 21:49:29 EDT 2001 | davef
SCREENING... 1. Is type 4 paste necessarily required? [No, not unless you are using it for some other purpose.] 2. Is No-Clean Ok to use? [YES] 3. How thin stencil is required? 5 mils? [5 is OK, but I wouldn�t base the decision on the 0201. 6 mil is
Electronics Forum | Wed Oct 24 11:14:44 EDT 2001 | Cemal Basaran
Dave; Thanks for responsding so fast. here are my answers. 1-WOW!!! How do people get these cool toys? I am with the University at Buffalo Electronic Packaging Lab. http://www.packaging.buffalo.edu We have pretty much everything that is sold on the
Electronics Forum | Tue Jun 24 13:46:21 EDT 2008 | bschreiber
I know it is not what you want to hear, but first and foremost, you must consult your local regulating agencies and here is why: Solder paste contains heavy metals. We are all familiar with the problems associated with lead, but lead free solder pas
Electronics Forum | Thu Jan 29 19:01:51 EST 2009 | stevek
Allow me a contrary viewpoint. I've had these things on my floor and had customers get outsourced evaluations done with them. Most expensive boat anchors I've run across. First the good points: The automated scanning and pattern recognition is go
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Mon Jan 15 14:25:54 EST 2001 | davef
Let me make several points on this issue � POINT 1: Let�s be basic � Soldering and welding are examples of process that the quality types call "special processes". Special process. The results of special processes cannot be verified fully by subs
