How is Aluminum PCB Made?
Aluminum printed circuit boards consist of metal-based seals covered by copper foil circuit layers. They are made of alloy plates that are a combination of magnesium, aluminum and silumin (Al-Mg-Si). Aluminum PCBs deliver good thermal potential, electrical insulation, and high machining performance, and they are different from other PCBs in numerous important ways.
Base layer
This base consists of an aluminum alloy substrate. The use of aluminum makes this type of PCB a brilliant choice for through-hole technology.
Thermal insulation layers
This is a critically important module of the PCB. It contains a ceramic polymer that has excellent thermal resistance, viscoelastic properties and defends the PCB against mechanical and thermal stresses.
Circuit layer
This layer contains the copper foil. Mostly, PCB manufacturers use copper foils extending from one to ten ounces.
The dielectric layer of insulation absorbs heat as current flows through the circuits. This is transferred it to the aluminum layer, where the heat is dispersed.
Achieving the highest light output possible results in amplified heat. PCBs with improved thermal resistance extend the life of your finished product. A skilled manufacturer will provide you with heat mitigation, superior protection and part reliability.
