Electronics Forum | Fri Oct 09 23:17:05 EDT 1998 | kallol Chakraborty
| | I need to set a cleanliness limit for our incoming boards. I know that some people use 14-10 microgr. sq. in. But how can I determine what is best for me. | | Can anybody tell me if there's a standard for this. | | Right now we are using an Alph
Electronics Forum | Thu Jun 26 17:40:21 EDT 2003 | Steve
Wanted to inquire if anyone has a way to monitor cleanliness of boards that are assembled with a no-clean process. I'm aware that incoming board cleanliness can be monitored, however, I am after checking of cleanliness of boards after assembly. Wit
Electronics Forum | Tue Nov 15 21:15:22 EST 2005 | davef
A fairly painless method for monitoring cleanliness is Resistivity Of Solvent Extract [ROSE]. Equipment is: * Omegameter * Ionograph * Ion Chaser [Zero-Ion] Anyone who desires to use an Resistivity Of Solvent Extract tester should read EMPF repor
Electronics Forum | Fri Dec 15 11:06:06 EST 2006 | Gman
Hello All, Is Ionic Cleanliness testing using say an Ionograph on No-clean assemblies a valid test? If not, why? I understand factors like PCB cleanliness but is the 1.56ug/in2 IPC criteria valid for no-clean assemblies and can an Ionograph be used
Electronics Forum | Fri Dec 06 10:16:57 EST 2002 | davef
Bare board cleanliness is still primarily measured by resistivity of solvent extract (ROSE) using instruments such as Omegameters and Zero Ions. What is considered as "acceptable" cleanliness varies between specification and from company to company.
Electronics Forum | Mon May 10 12:03:27 EDT 1999 | Douglas A. Hooper, Sr.
If I clean my assembly and find no visable contamination with the unaided eye, do I need to do cleanliness testing prior to conformal coating?
Electronics Forum | Fri Jun 27 08:39:35 EDT 2003 | davef
It's a excellent idea to monitor the cleanliness of your components and soldering process. Consider running a spare board.
Electronics Forum | Mon Aug 02 11:11:01 EDT 2004 | tberkey
I am running no clean boards for automotive applications. We have continued to use a cleanliness test as part of our control plan.I am wondering if anyone has been able to eliminate the cleanliness test due to the use of no clean materials?
Electronics Forum | Fri Oct 08 11:51:10 EDT 2004 | blnorman
Since you are using an Ionograph you need to use IPC-TM-650 method 2.3.25, static method. The test method is free on the IPC website. You'll need to get your customer to give you an acceptable cleanliness level to test to.
Electronics Forum | Mon Nov 08 15:17:35 EST 2004 | caldon
The EMPF published a nice article, now old but relative, to Cleanliness. www.empf.org Under Technical Docs The listing is ... RR0013 - An In-Depth Look at Ionic Cleanliness Testing - August 1993. Cal
