What is PCB?
PCB is a plate with a printed circuit , also known as a printed wiring board . It is used in electronics to create electronic devices. PCB serves two purposes for the construction of electronic equipment; It is a place to mount components and provides electrical connections between components.
PCB begins as a thin, non -conductive leaf of material. The most common material used is the glass fiber laminate material. On each side of this material, a thin layer of copper is chemically stored.
The next step is the "print" of the PCB connection diagram. The connection diagram is connected to connect the components. In the very first days of electronics, these connections were actually made with wires. That is why PCB is also sometimes referred to as printed cable boards. "Print" is usually done by photographic transmission of the image to the board. This image is "printed" with acidic material.
Furthermore, the PCB is inserted into a acid bath. AcidicThe bath removes copper from the board, with the exception of areas protected by resistant material. This process leaves the connection or cabling "printed" on the PCB. Furthermore, openings are drilled in the board that allow the components to be mounted on the board and the PCB itself is mounted in the electronics protection case. Finally, a protective coating is applied to the board to prevent the corrosion of the traces of copper.
The above process describes what is referred to as double or two PCB layers. They can be made from almost any number of layers by repeating the above process and laminating the resulting boards into a single PCB. The circuit board inside the computer on which you read this document has at least four layers and is more likely to be eight or even 12 layers of PCB.
It is now also more common to burn the parts directly to the board, which eliminates the need for holes into which the wires (wires) from SO must be inserted intowill be strictly. The component soldered on the board is logically called the surface mounting component and the plate is a surface surface surface of the surface. This technique allows a large increase in the number of components to be mounted on the same PCB, or the same number of components to be mounted on much smaller. However, the surface assembly also requires better quality control in PCB production.
PCB is now used in almost any available electronic product. It is by far the most common method that is currently used to connect and build components of almost any electronic device.