Electronics Forum | Mon Aug 22 09:27:20 EDT 2005 | javi
The list is not yet completed but I picked few different component that our supplier are not able to get in Lead-Free or problem to get leadtime: Mfg Part : Zener Diodes BZG03 - MFG : Phillips Mfg Part : PME271Y447M - MFG: Evox-Rifa Mfg Part : LMC606
Electronics Forum | Mon Aug 22 09:35:54 EDT 2005 | cyber_wolf
First off, why do you feel you need to check paste viscosity ? I thought checking paste viscosity was a thing of the past ?? If you are having paste viscosity problems then it's time to get a new paste supplier. Any of the main paste suppliers have g
Electronics Forum | Fri Sep 02 13:13:14 EDT 2005 | stepheniii
50% chance his boss has heard of (or maybe even one time seen) delamination and wants to be sure they don't have that problem. His boss probably felt a need to specify a test and that was one he had heard of. Personally I would recomend find a way f
Electronics Forum | Fri Sep 02 15:21:34 EDT 2005 | pr
Do you have a cube down the hall from me? I think it's already been forgotten, but when blindsided by these requests one has to do SOMETHING! I blasted one in reflow and did a 7 second solder bath dip with another and took pictures, nobody has asked
Electronics Forum | Wed Aug 24 10:53:37 EDT 2005 | PWH
Thanks for the input. Currently we have the advantage of having almost all SMT operators trained in advanced programming so we are able to make changes easily to feeders, etc. Many of the things you mention we do at this time so it's funny to see t
Electronics Forum | Tue Aug 23 03:42:10 EDT 2005 | Adeline
presently, the production facing this problem. We has couple of brd which is electroylic gold finishing with plug via. The brd has blister after the PCBA (in lead free temperature, 265 degree) Some time, bare brd already has the blisters. But most of
Electronics Forum | Wed Aug 24 08:50:59 EDT 2005 | davef
First, while black pad can be a problem with poorly controlled electroless gold [search SMTnet Archives for background], it is not a suffiecient reason to use electrolytic. It's the reason the supplier should fix their electroless gold process. Se
Electronics Forum | Wed Aug 24 21:57:45 EDT 2005 | adeline_ko
The blistering is around the plugging via. I can forward you the pic. For the plugging process, I'm not too sure how they plug. What is the correct practise for the plugging via. Now, what they did is. They will do a tenting process for both side.
Electronics Forum | Sat Aug 27 09:47:05 EDT 2005 | davef
From the pic, we see blistering, but none so close to via that we'd attribute the blistering to via, via plugging, or anything of the sort. When we see blisters like this, we think of a surface contaminant being present on the boards at the time of
Electronics Forum | Tue Aug 23 14:23:00 EDT 2005 | pjc
Most ovens I know use oil to lubricate conveyor chain, not grease. Anyway, is this what you're using: NMG No Melt Grease NLGI 2 (operates from -20�C to +270�C) NMG is a long-fibred highly adhesive grease which does not melt or drip at high temperat
