PCB (Printed Circuit Board), also known as Printed Circuit Board or Printed Circuit Board, also known as Printed Circuit Board or PWB (Printed Wiring Board), is made of insulating board as the substrate, cut into a certain size, with at least one conductive pattern attached to it and holes (such as component holes, fastening holes, metallized holes, etc.) arranged to replace the chassis of electronic components in previous devices, And achieve interconnection between electronic components. Because this type of board is made using electronic printing technology, it is called a "printed circuit board". It is not accurate to refer to "printed circuit board" as "printed circuit board" because there are no "printed components" on the printed circuit board and only wiring.
It is an important electronic component and the support of electronic components.
Printed circuit boards are not general end products, and the definition of their names is somewhat confusing.
For example, the motherboard used in personal computers is called the motherboard, and cannot be directly referred to as a circuit board. Although there is a circuit board in the motherboard, it is not the same. Therefore, when evaluating the industry, it cannot be said that the two are related to each other.
For example, because there are integrated circuit parts loaded on the circuit board, the news media refers to it as an IC board, but in essence, it is not equivalent to a printed circuit board. The printed circuit board we usually refer to is a bare board - a circuit board without any upper components.
According to the classification of PCB printed circuit board circuit layers: PCB printed circuit boards are divided into single panel, double-sided board, and multi-layer board. Common multi-layer boards are generally 4-layer or 6-layer boards, and complex multi-layer boards can reach dozens of layers.