The Derating module is used to analyze the overstress of components under various temperature conditions. The module provides a tool to define Derating curves and identify overstressed components, i.e., those working under stress exceeding the specified rating value. Rating, or maximum rated stress, is the specified value of temperature, power, voltage or current that define the absolute maximum stress limits. Exceeding these values creates a high probability of part damage/failure.

The maximum rating is specified in the part specifications or in standards for this type of part. It is common practice in many companies to define limit values of stress for various components as a function of temperature. These limits, "Derating curves", are part of the company policy for component usage. A report created by the Derating module includes all components in the selected part of the system, or only the overstressed ones. The module produces derating reports with indication of overstressed parts.