Electronics Forum | Fri May 29 08:25:13 EDT 2009 | floydf
We are getting what looks like cold solder joints on one of our boards. The boards have an aluminum substrate, and use OSP plating. The solder is lead free - 96.5 Sn, 3.0 Ag, .5 Cu. The flux is no clean. When we first had the problem, my solder profi
Electronics Forum | Tue Jul 28 20:11:14 EDT 2009 | hohk
Thanks Davef! 3M's product description of "3M™ XYZ-Axis Electrically Conductive Adhesive Transfer Tape 9719 is suitable for attaching low surface energy (LSE) EMI shields to electronic and electrical devices where high temperature (up to 400C) is re
Electronics Forum | Thu Nov 05 09:50:14 EST 2009 | adlsmt
Before you buy a manual screen printer try to do it by hand. We hand stenciled boards with 19mil pitch parts for three years with decent results, with your parts it should be simple. lay the board on a piece of ESD bubblewrap, the kind with small bub
Electronics Forum | Mon Jan 18 10:49:22 EST 2010 | pcbrookie
Hello all, One of our resistor arrays is becoming detached from its balls after reflow. This is the second instance of this happening. The balls are clearly soldered to the board, but the actual package is coming off (package pads are quite bare).
Electronics Forum | Fri Feb 12 11:45:14 EST 2010 | ppcbs
Greetings, > > We are looking to purchase > equipment to rework / repair our circuit boards > with BGAs. Our newer boards are starting to have > more and more BGAs. > > Is there any information > that "ranks" BGA rework stations? - a kind of a
Electronics Forum | Thu Jun 24 11:21:40 EDT 2010 | floydf
Hi, > > I have a 100nF 0805 ceramic cap (the most > common type!), Yageo brand (20+ pcs. on the > module). In our production run I get some errors > due to conductive caps (can be anything from 25 > Ohm to 5K - most are open of course). Only one
Electronics Forum | Tue Jun 29 22:56:04 EDT 2010 | deanm
There may be a better way, but this is how we do it: We have one SMT line and ALL SMT parts are kept in the SMT area. There is no kitting of SMT parts...only through hole, etc. For each SMT part in our ERP system, we set for backflush. That means th
Electronics Forum | Mon Jul 26 11:36:26 EDT 2010 | rgduval
Dean, My first thought relates to your statement: "I was under the impression that manufacturing engineering was responsible..." We find any statement that begins similar to this to be indicative of other issues within an organization. Unless it'
Electronics Forum | Tue Sep 21 18:46:24 EDT 2010 | slwolbert
Greetings: > > I am having 'Check Servo' issues > with an FCP 2 4000. It will zero set but given a > few minutes afterwards, the check servo alarm > sounds. > > At times the X/Y table will 'coast' > back to beginning position, like the power
Electronics Forum | Wed Dec 22 01:39:06 EST 2010 | boardhouse
Hi Johan, As a Asian board supplier - I would not recommend using Lead free hasl on any product that has BGA, you would be just looking for issues, flatness being the main. I agree with one of the other replies - Your purchasing dept. should not be
