Electronics Forum: oxidation (Page 2 of 90)

Oxidisation during Reflow

Electronics Forum | Mon Nov 25 18:16:40 EST 2002 | Dreamsniper

What really happens during the oxidisation process during reflow soldering? Where does the oxide goes...mix with flux etc...Is there a tin-oxide and lead oxide during the process? I believe that during wave soldering the oxides become dross...but wha

contamination on copper

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

Oxidation behaivor of SAC Solder Ball

Electronics Forum | Tue May 14 22:19:53 EDT 2013 | ultimatejoker

Hi, anyone know how the oxidation of SAC Solder Ball behave? How does the amount of Ag and Cu content affect the formation of oxide layer? Thank you

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Thu Sep 05 22:01:55 EDT 2013 | davef

Questions are: * How did you determine that the coating on your component leads is oxidation? * What is the oxide? BR, davef

OXidation of EEE components, is there a standard to follow or some good GMP's

Electronics Forum | Fri Dec 09 22:06:44 EST 2022 | smith88

Are there standards that dictate how long a EEE component can be exposed outside of a nitrogen bag before oxidation occurs? Since Covid I am seeing more and more caps and resistors that seem to have oxidation and do not solder well....

Solderability of BGA and PCB

Electronics Forum | Mon Nov 20 04:04:42 EST 2000 | Gyver

Sirs, Please do me a favor to answer the following questions, thanks a million! 1. Will the baking of BGA or PCB cause more oxidation before the SMT process? 2. What is the acceptable Life Time of solderability at customer site? The time that the sol

Re: Lead-Free Alloy composition used for leaded IC Packages

Electronics Forum | Tue Aug 22 11:23:40 EDT 2000 | Dr. Ning-Cheng Lee

Plating houses seem to exhibit various results. Unacceptable Ni oxidation levels appear to be related to poor Pd plating processes. Ni oxidation can occur at 3 process stages: 1) prior to the Pd being applied (Ni already oxidized) 2) during the p

QFP w/ oxidized leads

Electronics Forum | Tue Mar 19 07:48:26 EST 2002 | PeteC

Have QFP at o.5mm pitch with leads too oxidized for the flux in the paste to de-oxidize(in stock for boo koo time). I saw three companies on the Internet that can "tin" (solder coat) the leads. Does anybody have any experience with having this done t

MS2 molten solder surfactant

Electronics Forum | Tue Feb 14 09:29:46 EST 2006 | pjc

�..... their material acts as a barrier to oxidation," is wrong Mr. N. The MS2 material "consumes" oxides therefore removing the oxides from the dross by chemical reaction and releases the pure alloy. It is not a barrier and does not mix into the sol

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Wed Sep 04 22:48:13 EDT 2013 | winson16

SMT fine pitch connector having oxidation on lead and P&P machine keep rejecting the part. Is there any alternative way to reduce the part throw out rate without jeopardize the placement accuracy? Or is it possible to re-coat the connector lead or an


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