Electronics Forum | Thu May 15 13:13:16 EDT 2008 | arminski
thanks a lot sir davef. which is better between the two, static or dynamic? localized testing (C3) or bulk testing (Omegameter/Zero Ion)? do I really have to purchase this unit despite having an aqueous cleaner? thanks again...
Electronics Forum | Fri May 16 17:39:19 EDT 2008 | davef
We don't know what your customer expects. If you do a nice chart of your third-party results that show a stable and in-control process, we'd guess your customer would let you slide without buying a BIG dust collector.
Electronics Forum | Tue Sep 09 08:09:28 EDT 2008 | ck_the_flip
Try the "straw test" to test for ionic contamination. For reference, here it is from the fine SMTNet archives: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=496&#Message3044
Electronics Forum | Thu Sep 02 11:45:47 EDT 2010 | kevm
We have tried solderability testing using an agressive flux and have had good results. However, our Mfg process uses laser soldering equipment which is a validated process and we are limited on the type and amount of flux we can use due to ionic cont
Electronics Forum | Mon Feb 21 20:15:49 EST 2022 | arminski
since IPC-J-STD-001 RevH obsoleted the 1.56ug/cm2 UCL of ionic contamination tester in testing using ROSE test, how do you define the acceptable limit per PCB assembly? thanks
Electronics Forum | Thu Sep 02 16:12:51 EDT 2004 | Mike Konrad
Hi -K We are a manufacturer of ionic contamination testers (not yours). In most cases, automatic mode is appropriate. In some instances however, you may need extra time to �release� entrapped contamination from the sample. Automatic mode is not a
Electronics Forum | Tue May 25 11:37:50 EDT 2010 | davef
Where on the assembly is the dewetting occurring? Factors that influence dewetting usually involve non-ionic contamination such as: * Residues from board manufacture including silicone surfactants from solder resist & HASL rinse contamination * Comp
Electronics Forum | Fri May 15 18:09:00 EDT 1998 | Earl Moon
| | | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | | We h
Electronics Forum | Fri May 17 03:04:15 EDT 2002 | Mike Konrad
This conversation reminds me of the old �How Many Engineers Does It Take To�� joke. We manufacturer the ionic contamination (ROSE, SEC) testers and I am not aware of anyone that performs such exacting surface area calculations. Most people use th
Electronics Forum | Mon Oct 06 17:16:02 EDT 2003 | pjc
Yes, the OmegaMeter and IonoGraph are test equipment to measure ionic contamination. Either of those units should enable you to sort your inventory boards. for more info about this equipment, go to: www.cooksonee.com/products/scs/CoatingSystems/Ionic
