Derating Guidelines for Electronic Components
What is component derating analysis?
The upper limits (rating) for applied component stress (current, voltage, power, temperature etc.) is defined by the manufacturer.
In order to take extra precaution measures and increase the design robustness, stricter guidelines are defined.
Component derating analysis checks if the operating point of each component is below electrical and temperature guideline levels.
Why is component derating analysis important?
Component material damage may occur with higher probability when an electronic device is subjected to a power, current, voltage or temperature that is beyond its maximum stress rating.
EOS (Electrical Overstress) affects product performance until the component burns. It is the leading cause of returns in components, ICs and system failures during operation (see figure below).