Electronics Forum | Tue Sep 01 11:25:19 EDT 2009 | rocko
Hi davef, Thanks for the suggestion. I have inspected the heaters but I think they are OK (no visible coating, deposits, etc.). Unfortunately, I'm not sure that the residues are ionic. It was just preliminary report of the person responsible for the
Electronics Forum | Fri Sep 04 13:49:30 EDT 2009 | xps
Hi, in our company, we had performed a failure analysis on some PCB finishing ENIG faulty, cause detachement of heavy components. So we performed a SEM / EDX analysis on the nickel and we discover a 20 % of carbon instead of the standard 0.04% (on s
Electronics Forum | Fri Nov 20 11:21:37 EST 2009 | patrickbruneel
In 90% humidity it’s easy to get condensation. Condensation will create electrical failure when the board isn’t conformal coated. In your case the failure disappears when the humidity level drops so to me it’s unlikely that the flux has anything to d
Electronics Forum | Thu Apr 15 20:07:38 EDT 2010 | userrich
"BiRAL SC" is a water displacing cleaner. - effective for cleaning most metals including carbon- and stainless steel, copper, aluminium etc. - cleans electrical motors, brush holders, bearings, armatures etc, - cleans and treats most types of plastic
Electronics Forum | Fri Oct 15 11:32:04 EDT 2010 | patrickbruneel
Inspecting for plating problems shouldn’t be part of incoming inspection. Your board manufacturer should have the appropriate process control. I shouldn’t have said barrel cracks but plating skips. Plating skips are caused by dull drills or a too hi
Electronics Forum | Thu Jan 06 17:33:07 EST 2011 | boardhouse
Hi Johan, Sounds like you have already gone over your product very well to reduce product cost. Switching away from Deep gold Tabs & carbon ink Key pads can save quite a bit. The only other thing to suggest would be material - Moving away from Isol
Electronics Forum | Tue Apr 22 12:33:35 EDT 2014 | barryg
No we have a battery spring that is soldered directly to a PCB (standard tin plated copper PCB). The Battery spring supplier (and I have no confirmation he makes them or buys them) claims they are tin plated. When trying to solder to them it is very
Electronics Forum | Mon Mar 20 10:25:30 EDT 2017 | cyber_wolf
@ Westshoredesign: Go take the top covers off your XPM's. Tell me if you see flux residue on the blower motors and the surrounding area. If you see this, grab ahold of the blower motor and rock it back and fourth. It is moves, the seals are melted o
Electronics Forum | Thu Feb 09 20:12:51 EST 2017 | imarkl
Any advise about dewetting defect occurrence during 2nd pass reflow. Commonality on affected PCB having water marks near affected pad(s). Elemental composition found on affected pads without solder paste are Silicon and Sulfur. As well as in pad with
Electronics Forum | Tue Jun 26 14:54:10 EDT 2018 | etmpalletguy
Be careful, and make sure you ask for proof that the liner your buying is ESD safe! Also, make sure your customer is aware that the liner is made from silicone, in most military & aerospace, no silicone can touch the PC! If your liners are 18x18 and
