Electronics Forum: ipc-tm-650 2.3.28 (Page 1 of 2)

ionic residues on the surface of printed circuit assemblies

Electronics Forum | Wed Sep 02 11:54:34 EDT 2009 | davef

You can determine empirically what will work. * Use ion chromatography [IPC-TM-650 2.3.28] to evaluate the residues and determine if the residues must be removed. * Use energy dispersive spectroscopy for the elemental analysis or chemical characteriz

Re: measuring board/assy cleanliness

Electronics Forum | Wed Oct 18 16:33:26 EDT 2000 | Dave F

Mike: An omega meter has very little to do with ion chromatography. * IPC TM-650, 2.3.25B, Detection and Measurement of Ionizable Surface Contaminants is a process control method that washes boards with an isopropanol / water solution and measures

Cleaning of PCBA's

Electronics Forum | Fri Apr 15 14:06:24 EDT 2005 | saragorcos

Shean made some good points and offered some good starting resources. Adding to what he said, I would also mention that many times, even a no-clean flux can cause contamination that requires cleaning. Our lab has dealt with numerous cases of client

Ion Chromatography Testing Standard

Electronics Forum | Thu Sep 26 15:28:16 EDT 2013 | joeherz

I know - A stimulating topic.... IPC-TM-650 2.3.28 method calls for a PCBA or PCB to be placed into a bag with solution, shake, analyze. Great. There is a method of doing this testing that focuses on a specific area of a PCB or a component where r

how clean is clean?

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

Electromigration Testing

Electronics Forum | Sat Sep 04 06:25:07 EDT 2004 | GS

Many Thanks Dave for your patience (GBY). I was just trying to give a chance to our connector Supllier to read few micrograms less of NaCl found with the connectors. But even if using a "bonus formula" they are out of specs. Following it could be i

Electromigration Testing

Electronics Forum | Mon Jun 28 10:03:22 EDT 2004 | davef

First, welcome to your new job. Second, IPC-TM-650 2.6.14 is only loosely an �Ionic Contamination (Electromigration) Test�. * Electromigration Test, IPC TM 650 2.6.14, 2.6.14.1 * Ion Chromatography for Ionic Cleanliness, IPC TM 650 2.3.28 Third, I

Re: Prove no-clean is clean / Wadda Mean Clean??

Electronics Forum | Thu Sep 17 11:09:32 EDT 1998 | Dave F

I need an evaluation process to prove to a customer that our no-clean process does not leave excessive residue? Any ideas? Wayne: More of the same as Chry and Justin. KEY ISSUE The first thing that you need to know is: What does your customer me

Couple questions for Dave

Electronics Forum | Thu Sep 17 12:00:19 EDT 1998 | Mike C

I need an evaluation process to prove to a customer that our no-clean process does not leave excessive residue? Any ideas? Wayne: More of the same as Chry and Justin. KEY ISSUE The first thing that you need to know is: What does your cus

Cleanliness test

Electronics Forum | Thu Jan 02 11:35:30 EST 2003 | Richard

Cleanliness test � �Area Grid Arrays�. Evaluation of residues� resistivity in a specific location on the board. (As compared to �Solvent Extract� evaluation.) We are: SMT assembly, using standard �water soluble� process with micro BGAs (example: C

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