Hello Constantino , From the picture it appears the oxidation is on a PWB that's already assembled. If this is the case I would not expect there to be a problem with the connections as they were made prior to the oxidation. I'm assuming the oxidation occurred during a thermal cycle in the assembly process. I would have a concern and would recommend testing the adhesion if a conformal coating to this oxidized surface is required. If I can be of further assistance please e-mail or call me. Best Regards Gordon Sullivan Sales Engineer Huntsman Advanced Materials (USA) - Formulated Systems Division 410-963-3930 mailto:[log in to unmask] This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. Constantino Gonzalez <[log in to unmask]> Sent by: IPC-600-6012 <[log in to unmask]> 03/23/2009 11:45 PM Please respond to "(Combined Forum of D-33a and 7-31a Subcommittees)" <[log in to unmask]> To [log in to unmask] cc Subject [IPC-600-6012] Immersion Silver Plated PCAs What would be the reliability, functional problems, assemblies [PCAs] will have with oxidized surfaces? What wil be the disposition? Can they be salvage? Picture 105Picture 104 Constantino J. González, ACME, INC. President / Consultant Engineer - Official IPC MASTER INSTRUCTOR - IPC-A-610 Committee Chairman USA Cell Phone: 605-381-5963 - Mexico Cell Phone: 55-2709 - 6392 - <mailto:[log in to unmask]> [log in to unmask] or <mailto:[log in to unmask]> [log in to unmask] Skype - acmeinc_cjg Does your Company need Rework, Repair or Inspection of Electronic Assemblies Services. Do you have too much Rework, Scrap or Rejects from your Customer…..Call us, We can help! GALUSAMEX REPAIR Co. image003 acme4 P Please consider the environment before printing this email This email communication may contain CONFIDENTIAL INFORMATION WHICH ALSO MAY BE LEGALLY PRIVILEGED and is intended only for the use of the intended recipients identified above. If you are not the intended recipient of this communication, you are hereby notified that any unauthorized review, use, dissemination, distribution, downloading, or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify us by reply email, delete the communication and destroy all copies. [attachment "image005.jpg" deleted by Gordon Sullivan/US/ADVM/HUNTSMAN] [attachment "image008.jpg" deleted by Gordon Sullivan/US/ADVM/HUNTSMAN] [attachment "image009.jpg" deleted by Gordon Sullivan/US/ADVM/HUNTSMAN] [attachment "image010.jpg" deleted by Gordon Sullivan/US/ADVM/HUNTSMAN]