Typically, a component's life doubles for every 10°C decrease in temperature. Thus, a component rated for reliable operation at 85°C will have a significantly increased life if used at 55°C. Using an adaptation of chemistry’s Arrhenius equation it’s possible to calculate the effect of using a component at a lower or higher temperature than it’s rated for. The table uses an assumed Ea of 1 and hypothetical component rated for a 85°C degrees. Minimizing temperature rise and temperature cycles is the most direct way to increase reliability, but this calls for carefully planned thermal management of cooling via one or more of the cooling modes: convection, conduction, and radiation. Because it is dependent on how the customer mounts the supply, its enclosure, additional components in the enclosure, its ambient conditions, the use or non-use of active cooling such as fans, and other factors, this will often be beyond the OEM's direct control.