Electronics Forum | Mon Oct 11 13:22:04 EDT 1999 | Dave F
| Thank you all for your replies. I guess my age in this industry is showing. This military spec. does not appear to be in existance. So, let me make my request a little more to the point: | | Is anyone aware of a specification specifically refer
Electronics Forum | Thu Oct 09 13:14:20 EDT 2003 | MA/NY DDave
Hi If I read things correctly you have quite a problem. I am inclined to scrap the entire LOT. I will give some hints at what to do as others have, yet you might want to bring someone in if the loss in revenue is high. I don't know your lot or run
Electronics Forum | Wed May 14 20:33:52 EDT 2008 | davef
1 DYNAMIC TESTERS * Kenco ionic contamination tester (Zero-Ion) [Aqueous Technologies; http://www.aqueoustech.com 909-944-7771 Mike Konrad * Ionograph [Specialty Coating Systems; 7645 Woodland Dr, Indianapolis, IN, 46278; 800-356-8260 317-244-1200 F3
Electronics Forum | Thu Sep 11 18:44:31 EDT 2008 | smt_guy
We have an Ionic Contamination Testing system but short of having a monitoring record for the chemical concentration. What we have is a monthly maintenance check of the concentration and annual check and calibration of the chemicals. We seldom use th
Electronics Forum | Wed May 09 03:13:06 EDT 2012 | umar
I had send my coating board to the test lab for adhesion coating test. 3 times send, the result 3times fail. The coating chemical use is Humiseal 1B31. The process is clean the boards at washing process use the Vigon A200 saponifier mix with DI wate
Electronics Forum | Tue Jun 12 18:06:17 EDT 2001 | davef
The criterion you use will depend on the test method you select. For minimum requirements, look at J-STD-001C, Para 8, "Cleanliness Requirements". I figure that you�d measure the residues on a lot of your current product, measure the res on a lot o
Electronics Forum | Wed Feb 02 12:11:31 EST 2000 | Dave F
Casimir: Resistivity of Solvent Extract (ROSE) testers measure ionic contamination by washing boards with a DI water/IPA solution. (No-clean people: Stop and go on to something else.) The testers are process control instruments used to monitor a
Electronics Forum | Mon Nov 22 17:32:34 EST 2004 | davef
Assemblers often assume that the board and component suppliers provide them with clean product. This was not a problem when everyone used water washable fluxes, because the water washing used to clean the flux residues also cleaned the board and com
Electronics Forum | Thu May 26 19:32:13 EDT 2005 | Mike Konrad
Three popular methods: Resistivity of Solvent Extract (ROSE) Test Method IPC-TM-650 2.3.25: The ROSE test method is used as a process control tool to detect the presence of bulk ionics. The IPC upper limit is set at 10.0 *g/NaCl/in2. This test is p
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
