The layout of an aluminum PCB is similar to other PCBs. It has one or more layers of copper, solder mask, and silkscreen on it. However, instead of fiberglass or plastic substrates, aluminum circuit boards have metal substrates.
Printed circuit boards (PCBs), or called printed wiring boards (PWBs), have become basic parts in almost all areas of modern technologies. Copper trace is a crucial element on circuit boards. The copper always plays a role of carrying electrical signals to different components across the board assembly. Without traces, the PCB will not function. Of all the elements that build PCB boards, copper is one of the most important.
Power Electronics: Another benefit of a flexible printed circuit board is that it can be coupled with highly flexible, thin layers of copper, which means the board can handle heavier power currents. This is especially important in devices that will require more power to operate at full capacity, like those found in the power electronics industry.