Electronics Forum | Wed Jan 12 20:18:14 EST 2011 | Jacki
How many % were affected? If a few,it can be caused bcoz of PCB coating. We had encountered it and PCB house replaced for faulty boards. Since then, we do test first if we hve to solder PCBs from this PCB house.
Electronics Forum | Fri Sep 17 03:03:29 EDT 2010 | grahamcooper22
Hi Gani, looking at the HASL icture and the poor wetting of the solder over the pads I would imagine that the HASL coating is very thin on the pads and in actual fact isn't 'solder' but is tin /copper intemetallic and this has poor solderability. It
Electronics Forum | Fri Feb 13 09:46:51 EST 2004 | roertner
You might want to check int using a BGA underfill material prior to coating.
Electronics Forum | Thu Jun 26 13:04:33 EDT 2003 | mderen
What are the handling requirments for PCB's coated with OSP? Also do most solder paste work the same with OSP or do I need to use a certain paste type?
Electronics Forum | Mon Jan 13 11:14:41 EST 2020 | amitshir9
Conformal coating is a protective polymer film or chemical coating that seals off the vulnerable circuits. I've used the conformal coating flexible PCB from Capel Technology Co.Ltd and there are many types of circuit board produced used by conformal
Electronics Forum | Tue Aug 31 10:21:46 EDT 2010 | ranco13
Hello all, Can anyone know what influence has on RF/HF components when using PCB with OSP coating? We are now manufacturing our RF components on PCB with ENIG coating ,and want to use OSP instead. By the way:If anyone can send me an article on this s
Electronics Forum | Mon Sep 26 15:17:54 EDT 2005 | Amol
Hi, I am spray coating PCB's with the above mentioned coating. The problem is that as soon as the boards are coated, there are pin holes on the surface that subsequently turn into localized areas of dewet on te PCB (its almost as it the coating is fl
Electronics Forum | Tue Sep 14 04:00:12 EDT 2010 | genesan
Hi Sir grahamcooper22, There should not a issue in stencil since i had open the aperature 1:1(one to one).Futhemore this is HASL pcb coating as now our customer had convert to immersion silver.I had do comparison between both and found HASL wetting n
Electronics Forum | Mon Feb 27 11:06:12 EST 2006 | melby
We are going to start conformal coating PCB assemblies, and I was wondering about cleaning the boards before coating them. Do I need to clean them and if so, with what? We currently us a no clean solder. I am worried about contamination on the board
Electronics Forum | Wed May 17 12:08:04 EDT 2006 | Mark
Hello, I have recived from customer PCB where he found that big SMD electrolytic capacitor just fell off. I checked this boards (FR4 , Au/Ni coating). I noticed that all solder remained on the termination of capacitors and looks ok but on the boar
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