LED lighting is based on solid state technology. The lifetime of components – LEDs, capacitors, semiconductor circuits – depends on temperature. Every increase by 10 °C (18 °F) halves the expected lifetime.
It is therefore important to direct the heat away immediately after it is generated in the fixture. LED Lease does its own testing and simulation to determine the heat management performance. In the integrated fixtures we supply, a metal heat sink connects the electronics to the outer surface, where heat can escape. In 'retrofit' lamps like LED tubes (LED-TL), this is not possible. Such lamps try to force LED into the form factor of a conventional lamp. As a consequence, heat accumulates inside and the lamp quickly deteriorates. Properly cooled LEDs last as long as the frame they are in, so the traditional distinction between 'lamp' and 'armature' is superfluous and in fact detrimental to lifetime.