LED aluminum substrate is PCB, which also means printed circuit board. The material of the circuit board is aluminum alloy. In the past, the material of our general circuit board was glass fiber, but due to the large heat of LED, the circuit board of LED lamp is generally aluminum substrate, which can conduct heat quickly, and the circuit board of other equipment or electrical appliances is still glass fiber board!
Compared with the traditional FR-4, the aluminum substrate can reduce the thermal resistance to a very low level (the heat resistance is comprehensive), which reflects the parameters of blocking heat transfer ability. In the application of heat transfer engineering, in order to meet the requirements of production process, sometimes the heat transfer is enhanced by reducing the thermal resistance; Sometimes the thermal resistance is increased to suppress heat transfer), and the aluminum substrate has excellent thermal conductivity; Compared with thick film ceramic circuit, its mechanical properties are very excellent.
