Fast Pulse Anomalies Affect HBM System Test Accuracy

摘要

Through a combination of shielding and circuit changes, you have sufficiently improved the ESD discharge immunity of your product so now it survives repeated human body model (HBM) system tests. Congratulations! But before you can enjoy the kudos resulting from your achievement, you have one more thing to do. You must find out why a colleague in a sister division obtained different results after making the same modifications and running the same tests. Perhaps there was a mistake or the measurement techniques differed ever so slightly. There may be a simple explanation. On the other hand, ESD system testing has been notorious for producing inconsistent results. Human error can account for some of the problems, but ESD testing also is characterized by standard test methods that are only partially defined.