PCB boards are printed circuit boards, also known as printed circuit boards, which are providers of electrical connections for electronic components.
PCB boards can be categorized as single-sided, double-sided, four-layer, six-layer, and other multilayer boards according to the number of circuit board layers.
Because the printed circuit board is not a general end product, so the definition of the name is slightly confusing, for example: personal computers with the motherboard, known as the motherboard, and can not be directly referred to as a circuit board, although the motherboard has the existence of circuit boards, but it is not the same, and therefore the assessment of the industry when the two related to the same but can not be said.
Another example: Because there are integrated circuit parts loaded on the board, the news media called him IC board, but in essence he is not the same as the printed circuit board. The printed circuit boards we usually refer to are bare boards - that is, boards that have no components on them.
The current circuit board, mainly composed of the following:
Line and pattern (Pattern): line is used as a tool for communication between the original components, in the design of the design will be designed in addition to a large copper surface as the ground and power layer. The line and the pattern are made at the same time.
Dielectric layer (Dielectric): used to maintain the line and the insulation between the layers, commonly known as the substrate.
Through hole (Through hole / via): Through hole can make more than two levels of the line with each other, the larger through hole for parts plug-in, in addition to non-conductive holes (nPTH) is usually used as a surface mount positioning, fixed screws used in the assembly. p>The main advantages of using printed circuit boards are:
1, due to the repeatability (reproducibility) and consistency of the graphics, reducing wiring and assembly errors, saving time for maintenance, debugging and inspection of equipment;
2, the design can be standardized, which facilitates the interchangeability;
3, the high density of wiring, small size, light weight, which is conducive to the miniaturization of electronic equipment;
4, the advantages of electronic equipment;
3, the high density of wiring, small size, light weight, which facilitates the miniaturization of electronic equipment;
4, conducive to mechanization, automated production, improve labor productivity and reduce the cost of electronic equipment.
5, especially the FPC flexible board bending resistance, precision, better applied to high-precision instruments (such as cameras, cell phones, video cameras, etc.). Camera, etc.).
Reference:
Baidu Encyclopedia - Printed Circuit Board
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