2. Examples of EMC regression due to component changes
This section provides a concrete illustration of the difficulty of anticipating the risks of EMC regression when selecting a replacement component based solely on manufacturers' datasheet information. The influence of a component on EMC depends on numerous parameters, some of which the manufacturer provides little or no information on. This makes the task of selecting and validating a component on this sole basis a very delicate one.
Two pin-to-pin compatible components with identical specifications may have sufficient design differences, not disclosed by the manufacturers, to induce significant disparities in emission and susceptibility levels.
the same manufacturer can upgrade an IC reference by using a finer manufacturing technology (technology shrinking), modifying the allocation of power...
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Examples of EMC regression due to component changes
Optimized EMC qualification due to component obsolescence
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