Electronics Forum | Thu Apr 15 11:15:30 EDT 2004 | patrickbruneel
Pure (red) copper oxide is green, its not a residue its just oxidation. In your case water and heat will accelerate the oxidation process of unplated or unprotected pure copper. The best way to avoid this from happening is use a socket with tin or n
Electronics Forum | Tue Apr 20 14:55:19 EDT 2004 | mrmaint
Does anyone out there know of a method to remove oxidation from the balls of a BGA, other than reball. thanks, MRMAINT
Electronics Forum | Fri Aug 01 08:10:29 EDT 2008 | scotceltic
Has anyone come across a standard or study (JEDEC, IPC) where it has the recommended shelf life outside of a dry box for immersion silver coated PCB's to prevent oxidation from affecting the soldering process (Both reflow and Wave). I know it will
Electronics Forum | Wed Apr 23 08:35:54 EDT 2003 | davef
Over time, copper in the via will form an oxide with oxygen in the air.
Electronics Forum | Mon Aug 04 12:38:25 EDT 2008 | blnorman
Avoid cardboard boxes as well. They are sulfur bearers, and silver has an affinity to form silver sulfide.
Electronics Forum | Fri Aug 08 23:31:45 EDT 2008 | hanward
Hello,man,we are a PCB manufacturer.I can ask our engineer and reply you.
Electronics Forum | Wed Apr 23 15:17:11 EDT 2003 | Robert
Let me see if I got this right. The OSP in un-plugged vias will break down after subsequent reflows and washes which can result in oxidation. Question: Is there any paper covering oxidation and reliability on such a condition. We are averaging .0007
Electronics Forum | Wed Dec 10 10:05:07 EST 2003 | davef
We do not have experience soldering to the PVD surface you plan to use. We use Titanium [Ti] stiffeners in wave soldering and our wave equipment manufacturer uses Ti fingers, nozzles, pump blades, and other parts, because solder doesn�t stick to Ti.
Electronics Forum | Tue Apr 20 20:11:58 EDT 2004 | davef
First, how oxidized are these solder balls? Will the take solder using your routine flux / paste? Second, on restoring solderability, the three basic methods you can use to restore solderability on components are: * Highly active fluxes in a retinn
Electronics Forum | Wed Apr 23 16:01:45 EDT 2003 | davef
Question: Is there any paper covering oxidation and reliability on such a condition? Answer: Dunno, what does the 'sales-type' that talked you into this say?
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
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