Electronics Forum | Wed Sep 02 16:41:44 EDT 2009 | pcbcleaning
Advanced Cleaning Solutions is a Johnstown, PA based electronic manufacturing service provider (EMS) with more than 3,500 square feet of ESD safe facilities. Our services include precision PCB cleaning and ionic cleanliness testing/verification usin
Electronics Forum | Wed Nov 19 13:16:54 EST 2008 | sjpence
Simon, The equivalence factors were used to scale the values measured by ionic testing equipment to the values measured in the standard manual method. There is a good write-up by Bill Kenyon in this Technet Post describing the creating of the facto
Electronics Forum | Sun May 09 16:25:00 EDT 2004 | gabriele
Military and most commercial standards requires > post-soldered boards to measure less than 10 > �g/in of NaCl (14 when using an Omegameter, 20 > on a Ionagraph, and 37 on a Zero-Ion). > > As Dave > stated, 6.5 �g/in of NaCl is called out in >
Electronics Forum | Fri Dec 06 12:24:03 EST 2002 | Mike Konrad
Military and most commercial standards requires post-soldered boards to measure less than 10 �g/in of NaCl (14 when using an Omegameter, 20 on a Ionagraph, and 37 on a Zero-Ion). As Dave stated, 6.5 �g/in of NaCl is called out in Mil-P-55110 for ba
Electronics Forum | Mon Jan 08 20:57:52 EST 2001 | Dave F
Are you talking about bare board cleanliness or assembly level cleanliness? 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 "acce
Electronics Forum | Fri Nov 28 04:46:45 EST 2003 | gregoryyork
Best to establish what type of residue is causing this problem and then stamp it out.Speak with SCOPE Labs who offer PCB extraction followed by IR and IC work. So many problems with porous resist at present and NON ionic materials that you really nee
Electronics Forum | Wed Dec 30 17:34:23 EST 1998 | Michael Allen
I'm afraid we don't agree regarding the best test method to use here. My understanding is as follows. The omegameter test measures board-level, ionic contamination (i.e., average for the entire board area and all components); it does not tell you w
Electronics Forum | Thu Dec 31 14:20:35 EST 1998 | Michael Allen
Kelvin, Yes, we're referencing the same spec. I performed the test under the Class 2 conditions (except that I used a 100V bias rather than 50V...but my water-washed microBGAs still passed). Regarding the omegameter test: we have this instrument,
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 | Thu Dec 31 01:09:18 EST 1998 | Kelvin Chow
Dear Micheal, SIR test is used to characterize fluxes by determining the degration of electrical insulation resistance of rigid printed wiring board specimens after exposure to the specified flux. (IPC TM-650 #2.6.3.3 http://www.ipc.org/html/tm2.6.h
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