PCB (Printed circuit board) is one of the most common names, which can also be called "printed wiring boards" or "printed wiring cards". Before the advent of PCBs, circuits were made up of point-to-point wiring. The reliability of this method is very low because as the circuit ages, the rupture of the line will cause the circuit nodes to be broken or shorted.
Winding technology is a major advance in circuit technology, which improves the durability and replaceability of the line by winding a small-diameter wire around a column at a connection point.
When the electronics industry develops from vacuum tubes and relays to silicon semiconductors and integrated circuits, the size of electronic components is reduced and the price is also falling. Electronic products are appearing more and more frequently in the consumer field, prompting manufacturers to look for smaller and more cost-effective solutions. Thus, PCBs were born. PCB| FPC| HDI PCB| HDI| soft-hard combination board| high-frequency circuit board| aluminum substrate| copper substrate| multilayer circuit board| deep circuit board factory - focus on PCB manufacturing for 13 years!
That want to make a complete 5G circuit board, need to go through a number of cumbersome and complex processes, in the PCB board production process if there are some operational errors, it will lead to the final production of the finished board quality problems, does not meet the product requirements. The common PCB board disconnection problem will affect the implementation of the circuit board function.
So, what is the cause of the 5G circuit board disconnection?
1, the film process: the film is not firm, bubbles appear, if the wet film will also have garbage pollution.
2. Exposure process: problems caused by scratches or garbage on the negative, including exposure machine problems, insufficient exposure and so on.
3, the development process: the development blur is not clear.
4. Etching process: the nozzle pressure is too large, and the etching time is too long.
5, electroplating problems: in the plating time of uneven plating or the surface of the adsorption force.
6. Improper operation: In the production process of the circuit board, the circuit board is scratched and broken due to improper operation.
Pcb board disconnection is what causes, first look at the form of broken wire, by analyzing the form of broken wire to find out which process the problem caused by the 5G circuit board disconnection problem, and then gradually in the production process may appear to troubleshoot the causes that may occur.
Through the above description, I hope that it will be helpful for you to analyze the cause of PCB board disconnection
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