Electronics Forum | Tue Dec 10 13:36:49 EST 2002 | caldon
The EMPF has published a paper/ study on this topic, one of there better pieces of work. http://www.empf.org/html/empfset.htm www.empf.org Doccument number rroo13 Best regards, Cal
Electronics Forum | Thu Dec 12 14:21:35 EST 2002 | gswable
Hi Mike Why is there a difference in readings on the Omega meter and the Ionograph ? Is it because that the IONOGRAPH is a closed loop extraction mechanism while the Omegameter is not ? Can you explain T
Electronics Forum | Thu Dec 12 16:12:28 EST 2002 | MA/NY DDave
Hi I am wondering about your reply, Please continue. YiE, MA/NY DDave
Electronics Forum | Mon May 10 19:36:08 EDT 2004 | gabriele
Many Tnks Dave, always helpful is your support. I am not familiar how to access EMPF, I have tried already last wk but I was able to read only the abstract of RR0013. Is the access for free or it necessary to be a registered SMTA member ? Regards G
Electronics Forum | Mon May 10 19:44:15 EDT 2004 | davef
Hi Gabriele Has the snow melted up there, yet? No, SMTA membership, while good in its own right, is not a prerequiste to ordering documents from EMPF. Select "order technical publications" here: http://www.empf.org/html/empfset.htm
Electronics Forum | Fri Apr 04 05:04:49 EST 2003 | iman
10Mohm DI washing. On the paste supplier recommendation, we sent sampling boards for Ionic Contamination test with specs
Electronics Forum | Fri Apr 04 09:28:59 EST 2003 | davef
Q1: Anyone has any ideas on how this post-SMT reflow solder joint could have changed to whitish joint? A1: Dunno. You need to tell us more. For instance: * What is the appearance of this white residue? [eg, glassy / coarse, milky colored / opaque,
Electronics Forum | Wed Aug 13 18:12:20 EDT 2003 | Carol
Has anyone tried to get conformal coating under a BGA? (large package MPC555). There is a concern with ionic/metal bridges developing between contacts due to accumulation of dust/humididty. Final product is Class 3 (aerospace). Thanks, Carol
Electronics Forum | Thu Mar 18 20:37:35 EST 2004 | davef
Water wash cleaning with a deionized water rise is used for bare boards and assemblies [and probably components also, but we're not sure]. Look here for the basics: http://www.circuitree.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2133
Electronics Forum | Wed Jul 14 15:24:57 EDT 2004 | Jarmato
You may also want to investigate an Ionic contamination tester. You can check with Alpha, Westek or an equipment broker to find a used tester. If you switch to OA fluxes this will be an important test to perform on a regular basis.
