The rise in LED technology from conventional bulbs and lamps has necessitated the need for PCB’s to be able to counter the heat generated by LED’s.

Standard FR4 boards on their own tend to burn and subsequently fail in high temperatures. Therefore, to alleviate this issue metal backed PCB's are used which in essence are thin PCB’s bonded with either Aluminium or Copper of varying thicknesses. The result of this backing means that any excess heat passes through the FR4 substrate and is drawn in by the Aluminium or Copper thus stopping the actual PCB from over-heating.