When testing for blacktopping on IC’s the use of acetone has been the accepted method used when inspecting parts purchased from the open market. The counterfeiters figured out years ago that acetone was being used and they have adapted by getting smarter. Many of the top coatings now are baked on using acetone resistant materials. Using a simple razor blade is an easy way to test any top coating. Sometimes the results are hard to read, but it is usually clear that there is a layer on top of the plastic if you are using a microscope. Here is a great example of some parts that we caught today.
Robb Hammond is the President of AERI and the chair of the Aerospace Industry’s Counterfeit Electronic Components Mitigation Standard for independent distributors, AS6081, which has become one of the industry’s most respected documents, as well as being adopted by the Department of Defense. Robb is one of the foremost thought leaders in the industry on counterfeit detection and speaks regularly at conferences around the globe.