Electronics Forum | Thu Jul 18 09:55:05 EDT 2002 | gdstanton
Mike, When we measure solder inspection yield by dividing the number of defective joints on a CCA by the total number of joints on the PWB. A defective joint is classified only once. That is we don't count multiple defects on the same joint. Our
Electronics Forum | Fri Jul 26 10:35:20 EDT 2002 | jaimebc
Using white labels on xouts works for us. I prefer to used the machine BBR ( Bad board recognition ) when building multiple arrays with no pattern on xouts. We always run xouts last, therefor, we enable the BBR only to finish the arrays with X on it.
Electronics Forum | Tue Jul 30 08:37:39 EDT 2002 | davef
When you talk about 'poor wetting', 'dewett', 'no wets', etc.; are you seeing solder pulling back or away from the pad? Please describe the condition. Dewetting. The condition in the solder joint in which the liquid solder has not adhered intimate
Electronics Forum | Wed Jul 31 17:25:39 EDT 2002 | sueph
Dave, thanks for the reply. These boards have metal plating covering 99 percent of both primary and secondary surfaces. The only places without the metal plating are the extreme outer edges and about an 1/8 inch surrounding the plated holes. We do
Electronics Forum | Wed Jul 31 19:30:54 EDT 2002 | AXRT
Looking for partner & sponsorship Ladies and gentlemen, I am looking for serious partners, willing to support me and to cooperate in the realization of two projects in the area of implementation of modern X-ray techniques. Both projects will place
Electronics Forum | Wed Jul 31 19:45:23 EDT 2002 | AXRT
Ladies and gentlemen, I am looking for serious partners, willing to support me and to cooperate in the realization of two projects in the area of implementation of modern X-ray techniques. Both projects will place on the market some new, very attr
Electronics Forum | Sat Aug 03 08:44:11 EDT 2002 | P. Kannan
We are having 3 MPM UP-2000 printer & 1 AP-25 printer with us. I would like to have the technical guidance for my following application. For one of our model, there is a requirement of Glue & solder paste on same side of the PCB. Currently we are u
Electronics Forum | Sat Aug 17 18:41:29 EDT 2002 | kenbliss
Hi Brian Thank you very much for you comments, Points well taken, forgive the length of my response here, but I wanted to respond to each of your points. The Pick and Place machine �should� be the bottleneck. The reason is in my 20 years in the in
Electronics Forum | Tue Aug 13 20:57:01 EDT 2002 | davef
We don�t use this glue. What does Heraeus say about your condensate? [I'm With the previous poster. Your condensate sounds like goop from NC flux not glue.] How to clean out a 3 meter length of chimney? Depends on your tolerance for pain * Take
Electronics Forum | Wed Aug 21 02:11:58 EDT 2002 | kenbliss
Hi Joseph It is not clear what you want us to comment on, however I will take a shot. 1. If the boards you are assembling are expensive it may make sense to strive for 50ppm. 2. If the boards are not very expensive, in my experience you would be
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