Counterfeit electronic components are an increasing threat to the supply chain for consumer, industrial and, more importantly, military parts. Some counterfeit parts are like counterfeit money, unauthorized copies. Other cases include mislabeled parts where parts meant for one purpose are relabeled for another by changing the part number.
Specifically, parts built for consumer purposes can be illicitly changed, appearing to be suitable for the extreme rigors of military or aerospace use. Even authentic parts with the correct model number can become counterfeit when they are improperly recycled and marked as new.
As the producers of counterfeit electronic components become more sophisticated in their methods, it requires more detailed testing to spot the fakes. A similar device packaged and marked to appear as the correct device may even pass certain functional and parametric testing. A comprehensive set of tests includes such steps as validating the physical dimensions, testing the permanency of all markings, x-ray testing and electrical testing. For example, New Jersey Micro Electronic Testing uses a variety of tests in its Mission Imposter program to spot counterfeit electronic components….
Read more at: Electrical testing to track fake military parts.