Current/Voltage
When either Power, Operating or Current, Operating is the selected parameter in the Derating Definition pane, or when either Power Stress Ratio or Operating Stress Ratio is the selected parameter in this pane, the only choice available for Minimum rating is None.
When the parameter is Power, Operating or Current, Operating, the choices available for Maximum rating are None (default) and Constant Derated Value.
When the parameter is a stress ratio, the choices are None (default) Constant Derated Value, Standard Derating Curve, and User-Defined Derating Curve.
When Constant Derating Value is selected, Nominal and Worst case are shown. When Standard Derating Curve is selected, Nominal and Worst case become available for several fields. A checkbox for indicating whether you want to use a particular derating curve for the part type might also appear. For more information, see Standard Derating Curves.
Standard Derating Curve
When User-Defined Derating Curve is selected, Nominal and Worst case tables are shown. For more information, see User-Defined Derating Curves.
User-Defined Rating Curve