source:Industry News release time:2022-07-05 Article author:yu Popular:pcb
PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support body for electronic components, and a carrier for electrical connection of electronic components. Because it is made using electronic printing, it is called a "printed" circuit board.
How much do you know about circuit boards?
What are the advantages of PCB circuit boards?
After the electronic equipment adopts the printed board, due to the consistency of the same type of printed board, the error of manual wiring is avoided, and the automatic insertion or mounting of electronic components, automatic soldering, and automatic detection can be realized, which ensures the quality of the electronic equipment. , improve labor productivity, reduce costs, and facilitate maintenance.
How are PCB circuit boards classified?
Classification according to the number of circuit layers: divided into PCB single-sided, PCB double-sided and PCB multilayer. Common multi-layer boards are generally 4-layer boards or 6-layer boards, and complex multi-layer circuit boards can reach dozens of layers.
What are the advantages of PCB circuit boards?
The reason why PCB circuit boards can be used more and more widely is that it has many unique advantages, which can be summarized as follows: high density, high reliability, designability, producibility, testability, assembleability, maintainability, etc.
What is the production process of PCB circuit board?
Material cutting, inner layer, lamination, drilling, immersion copper, circuit, drawing, etching, solder mask, character, tin spraying (or immersion gold), gong edge, v-cut (some PCB circuit boards are not required), Flight testing, vacuum packaging, etc.
What are the process standards for welding?
Electrostatic protection methods during PCB circuit board soldering: leakage and grounding.
Soldering process: clean the components to be removed, heat the solder feet with an electric soldering iron, clean the solder feet with a tin remover, remove the old components, put in the new components correctly, heat the solder feet, move the solder wire, move Open the solder wire and remove the soldering iron.
Check the solder joints: whether the solder joints are round, bright and firm, and whether there is any phenomenon of continuous welding with the surrounding components.
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