Electronics Forum | Thu Aug 28 23:15:44 EDT 2014 | phyllishwl
Hi all, Our production reported that they found 3 panels out of 53 panels with strange phenomenon after reflow. 1/ Blister / Delamination of PCB panels, 2pcs blister/delamination under solder mask, 1pc under Gold plating at Gold finger 2/ Silkscr
Electronics Forum | Wed Nov 19 15:16:47 EST 2014 | warwolf
Interesting, see we used to do a large amount of PTH but we have been able to convert most of those parts to SMT now. the majority of our PTH is connectors. I am doing some research as to the types of through hole assembly that still remain.- This d
Electronics Forum | Tue Oct 10 07:30:19 EDT 2017 | spoiltforchoice
TBH I think perhaps the OP deserved it, there is perfectly good explanation of Reflow and Process Window Index on Wikipedia for starters and if you want more all sorts of FREE specialist papers on things like reflowing flex circuit, lead/lead free et
Electronics Forum | Thu Oct 18 08:27:46 EDT 2018 | spoiltforchoice
They visited our factory once bringing the desktop variant with them quite a while ago (~8 years perhaps when they were still called something else). At the time it was an FAI machine first and foremost with some "AOI like" features that perhaps o
Electronics Forum | Tue Mar 14 07:59:41 EST 2000 | JAX
Emmanuel, The discussion on what finish to use whether it be HASL, Immersion gold over nickel, Organic Solderability Preservatives, ect...... is still ongoing. This is not the only decision you need to make. Do you plan on Soldermask Defined Pads? Wh
Electronics Forum | Thu Mar 09 04:02:12 EST 2000 | Wolfgang Busko
We used an air knife using foam fluxer and no clean flux to remove excessive flux from the boards for a better look afterwards. A secondary effect might be that the flux is forced into the vias giving you better results on the top. If you feel a need
Electronics Forum | Fri Mar 03 09:48:06 EST 2000 | Wolfgang Busko
I have heard about it. The main reason is to save money. The problem is, or better is said, that the mixing isn�t that simple for you got have a homogen paste afterwards and the solderballs shouldn�t be deformed in size so that problems during printi
Electronics Forum | Thu Mar 02 13:17:00 EST 2000 | Russ
Jack, a couple of questions first, 1. What pitch are these leads? 2. What are the lead footprint dimensions? 3. Orientation of component? I personally have never had much luck soldering QFPs in the wave unless they are 50 mil pitch or greater, we o
Electronics Forum | Wed Mar 01 09:34:13 EST 2000 | Sorin
HELLO, Do anybody know if is existing an empirical rule that can show me how many amps can carry a plated through hole with a diameter of x.xx millimeters? Is there a formula depending on X.XX value that could help me to make such calculations? How
Electronics Forum | Fri Feb 25 11:13:32 EST 2000 | Russ
This probably won't help much but I find it at least a little interesting. During some experimentation recently I accidently loaded a board into the wave upside down and it had a PLCC 68 package along with other types of components that had only bee
