I recently wrote an article for US Tech (published in the Oct, 2014 issue) describing the proper procedures for solvent testing for remarked and resurfaced electronic components and the occurrence of false positive results when a solvent test is applied to the wrong type of electronic component. Examples of false positive results are shown where the Dynasolve and Mineral Spirits tests return false positive results when used on authentic can packaged devices.
While Mineral Spirits testing, Acetone testing, 1- Methyl 2- Pyrrolidone testing and Dynasolve testing have been vital in uncovering many anomalies associated with parts that have been remarked or resurfaced, we show that using these techniques improperly on hermetically sealed ceramic devices or can packages that have not been resurfaced can result in false positives.
NJ MET has developed a lot of expertise in correctly applying the appropriate solvent testing procedures, depending on the type of electronic component being tested. We apply that expertise in all parts of our component testing programs. Thorough testing with the appropriate procedures is necessary to identify counterfeit components and keep them out of the supply chain.
I invite you to join the conversation by commenting below your thoughts and experiences with these testing procedures.