Six causes of PCB disconnection 2021-10-20

Want to make a complete PCB plate , It needs to go through many complicated processes , stay PCB If there are some operational mistakes in the process of plate production , It will lead to quality problems in the final finished boards , Does not meet product requirements . common PCB The board is broken , It will affect the realization of circuit board functions .

• that ,pcb What is the cause of the broken board wire ？

1、 The process of coating ： The film is not fixed firmly , Bubbles appear , If the film is wet, there will be garbage pollution .
2、 Exposure process ： Problems with negatives caused by scratches or garbage , Including exposure machine problems , Partial insufficient exposure, etc .
3、 Development process ： The development is not clear .
4、 Etching process ： Excessive nozzle pressure , Etching time is too long .
5、 Electroplating problems ： When electroplating, the electroplating is uneven or the surface has adsorption .
6、 Improper operation ： During the production of circuit board , The circuit board is scratched and broken due to improper operation .

pcb What is the cause of the broken board wire , First, let's look at the form of disconnection , Find out which process caused the problem by analyzing the form of disconnection PCB The board is broken , Then, the possible causes in the production process shall be checked step by step .

Through the above description , Hope to analyze you PCB The reason for board disconnection is helpful .

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