English: This chart plots the amount of power dissipated in four different silicon devices over a large range of current.

1)0.7V Forward Drop Diode 2)0.3V Forward Drop Diode 3)10milliohm MOSFET 4)1milliohm MOSFET

The intent is to see when a diode or a MOSFET is more power-efficient in a given application. These are ideal situations, actual values can vary, please look at your appropriate devices' data sheets and use this only as a general guide line. Originally created for the Active rectification article, but it may be freely used anywhere anyone sees fit.