Although the whole machine is very complex, but learn to understand is not a high thing, through continuous learning and practice, you can learn to read. In fact, when looking at the picture, you can use a variety of ways to look at the picture. Finally, it is necessary to complete several basic tasks of reading the diagram and achieve several basic requirements of looking at the diagram.

The board should take into account the connection between the board, there are generally three kinds: V-CUT (V-cut), stamp holes and hollow connection strips. The V cut is used more for the regular board, as long as the two boards are put together, leaving a gap between them (the gap of the V cut). Stamp holes are used more in the special-shaped plate, and multiple holes are punched at the joint of the plate. The hollow connecting strip is the use of a very narrow plate to connect, and it is used more in the board with a half-hole process.

Today, we bring you a complete version of the circuit board production process, hoping to let you have a deeper understanding of the production of circuit boards!

The raw materials used in circuit board processing are mainly substrate, copper foil, PP, photosensitive materials, anti-soldering paint, negatives, etc. Next, PCB manufacturers will briefly tell you the raw materials required for circuit board production.

The volume of electronic products is becoming thinner and shorter. Direct stacking of holes through blind holes is a design method to obtain high density interconnection. To do a good job of stacking holes, first of all, the flatness of the hole bottom should be done. There are several typical flat hole surface production methods, electroplating hole filling process is a representative one.

PCB circuit board quality can be started from two aspects; The first method is to judge from the appearance, and on the other hand, to judge from the quality specification requirements of the PCB board itself.

This kind of board is the simplest, that is, the internal multi-layer circuit board has no buried holes, and the pressing is completed once, although it is a laminated board, its manufacturing is very similar to the conventional multi-layer circuit board a lamination, but the subsequent and multi-layer circuit board is different from the need for laser drilling blind holes and other processes.

PCB is an important electronic component, is the support body of electronic components, and is the carrier of electrical connection of electronic components. Because it is produced by electronic printing, it is called a printed circuit board.

PCB circuit board processing is the product of OEM customers, not the same customer customized products are different, there are few shared products, on the other hand, out of quality thinking, some customers may also specify the use of a manufacturer's substrate, or ink, etc., in order to achieve its quality and cost control requirements, so PCB processing there are variable prices.

If the frequency of the digital logic circuit reaches or exceeds 45MHZ~50MHZ, and the circuit working on this frequency has accounted for a certain amount of the entire electronic system (for example, 1/3), it is usually called a high-frequency circuit (multi-layer circuit board).

The original origin of PCB is to make the circuit diagram of the circuit board with the printed process, but later because of the improved resolution requirements for the line, and the printing process can not meet, it is replaced by a Huang Guang microshadow process with a higher line resolution.

The definition of PCB impedance board is that a good laminated structure can control the characteristic impedance of the printed circuit board, and its wiring can form an easily controlled and predictable transmission line structure called the impedance board.

During the process from the inner line pattern transfer of substrate to the outer line pattern transfer by pressing several times, the different longitudinal-weft expansion and contraction of the slab will be caused. From the whole PCB production FLOW-CHART, we can find out the reasons and processes that may cause abnormal expansion and shrinkage of board parts and poor dimensional consistency.

For many friends who do not know much about the circuit board industry, they always think that PCB is PCBA in their consciousness, there is no difference between them, in fact, the difference between PCB bare board and PCBA is very big.

Copper plating is the most widely used in order to improve the binding force of the coating and a pre-coating, copper plating is an important protective decorative coating copper/nickel/chromium system components, flexible and low porosity of copper plating, to improve the binding force and corrosion resistance between the coating plays an important role.

Via hole also known as a conduction hole. In order to meet customer requirements, in the process of PCB production, the through hole must be plugged. Through practice, it is found that in the process of plugging, if the traditional aluminum sheet plugging process is changed, the use of white mesh to complete the plate face welding and plugging, the PCB production can be stable and the quality is reliable.