Electronics Forum | Mon Dec 20 10:20:14 EST 2010 | 18424
Test Resistance to ECM shall be 65C +- 2C @ 88.5% +- 3.5% All SIR Measurements shall not exceed 100 MOhm. I am not sure of voltage.
Electronics Forum | Tue Jun 12 13:53:43 EDT 2001 | Eliud Rivera
We are trying to quilify a No-Cclean solder paste and we would like to know what kind of criterias or measurments are use to qualify the amount residues? Can we use an omega meter for that? What equipment measures SIR?
Electronics Forum | Tue Aug 23 08:06:28 EDT 2005 | mskler
Hi every body. I want to know acbout S.I.R. of PCB . What it should be & how we can measure? Is for diffrent frequencies application board it is diffrent? Please suggest.
Electronics Forum | Fri Mar 26 10:23:55 EST 2004 | Mike Konrad
Patrick, When you say "no-residue" what exactly do you mean? Is there truely "no-residue" or is it "no visible residue"? What type of ionic contamination results have you experienced? If you take a bare board that measures 0.0 NaCl and reflow it
Electronics Forum | Fri Jul 30 17:32:15 EDT 1999 | Dave F
| Very shortly I will be evaluating OA flux and aqueous cleaning to replace our RMA and solvent cleaning process. I am primarily interested in batch aqueous cleaners for reasons of budget, floor space, etc. I am concerned about the ability of H2O t
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 | Sat Feb 14 19:35:51 EST 1998 | C. Lao
Mr Lao We have some specialist knowledge on this subject and offer both equipment and services for these tests. My first recommendation is that take coupons manufactured by your PC Fabricator and then samples at each manufacturing stage: Bare coupon
Electronics Forum | Sun Jun 07 19:09:21 EDT 1998 | Graham Naisbitt
Chiakl Ion Chromatography has been perfectly described by Dave, but here are a couple of extra considerations: Ion Chromatography will tell you precisely what is present on the surface of your board/assembly but it will not tell you whether it will b
Electronics Forum | Mon Jun 28 13:34:06 EDT 1999 | Scott Cook
| Hey Scott, | | Good posting. However, what test did you perform and what was the nature of your technology? Both ionics (SMD600) and SIR on RF product to the 3 Gig range. Power amps and Xceivers. Technology was mixed; double sided SMT. My bare b
Electronics Forum | Thu Nov 11 17:17:11 EST 1999 | Boca
1. Most ionic testing is measured in NaCl, that is, the ionic residues are quantified in terms of NaCl equivalence. The test does not determine what the ionic residue is, just its relative strengh. 2. I use IPC cleanliness specs on OA fluxes but n
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