In electronics, derating is the operation of a device at less than its rated maximum capability to prolong its life.Derating can also provide a safety margin for transient voltages or currents (spikes) that exceed normal operation or prolong life.For example, the life of electrolytic capacitors is dramatically increased by operating them below their maximum temperature rating.All dimmers rely on heat conduction and convection to keep the electronic components cool.Derating is the reduction of the maximum capacity (load) a unit can reliably handle when fins/side sections are removed.
