This is the most difficult type. In this type, several layers of plates are placed in PCB. A foil coating with conductors is available in each layer of insulation. The layers are glued together in a special way. Their number can reach several dozen. Multilayer PCBs are used in the space and defense industries, as they have excellent performance characteristics. At the same time, their cost can be very high.
As the name implies, the foil with conductors is located on both sides. This type is used in household appliances, measuring equipment, etc. In addition, two–layer versions are used in a more serious industry, that is the military. But for these purposes, the following type is also often used.
It's the simplest option. They have a simple production process. Such PCBs are used in household appliances, and toys. With this design, the foil coating with all components is located on one side of PCB.
Since the advent of modern technologies, the demand for these products is constantly growing.
Depending on the production methods, the substrate materials used and other features, PCBs are divided into different types. And there are several classifications of these.
If we consider the number of metal foil layers, the following types are distinguished:
In addition, this type has a different substrate material. For example, PCBs made of getinax or similar material are rigid. They are quite popular as they have high durability and resistance to deformation. They also have a longer service life.