Component derating involves a basic calculation used to keep a component within safe limits. For instance, with a capacitor, the goal is to ensure it doesn't operate at its highest possible voltage. It's recommended to apply a derating of at least 25%, and it's even better to increase it to 50%.
When it comes to resistors, derating is about managing their power. The power they handle during operation should be limited to 75% of their maximum capacity.
For inductors, the derating approach considers two factors: keeping the hot spot temperature below 30°C and ensuring the peak magnetic strength stays at 70% of the saturation point.
A table with a derating for other components can be found on the standard NAVSO P3641A.
