The Dirty PCB refers to that in electronic products, the surface of the PCB is stained with dust, oxides, oil, welding slag and other impurities, them lead to unsightly appearance of the equipment and affects functions such as communication and power supply. There are many reasons for substrate contamination, mainly including the following aspects. Firstly, the PCB is not cleaned for a long time may be one of the main causes of dirt. When using electronic equipment, it is inevitable to accumulate a lot of dust and fine debris, such as droplets, hair and debris, etc., them will form dirt on the surface of the electronic equipment, thereby affecting the normal operation of the equipment. Second, environmental conditions are also one of the causes of the Dirty PCB. For example, road conditions such as temperature, humidity, and dust in the working environment can have a significant impact on the dirt of the PCB. Finally, the quality of the equipment and the occasion of use will also affect the degree of dirty of the PCB. The surface materials of some low-quality electronic equipment are often poor in quality and prone to dirt, and the use environment and frequency of use of the equipment are also factors that need to be considered. With the rapid development of electronic technology, PCB have become an important part of various electronic devices. The cleaning of the PCB is the basis for ensuring the long-term stable operation of electronic equipment. However, due to various factors such as environment and use, the PCB will inevitably be contaminated and corroded, resulting in various failures of electronic devices. So, how to effectively prevent PCB dirty? Firstly, the equipment should be cleaned and maintained regularly to avoid the accumulation of debris and dust, which will affect the normal operation of the equipment. This includes removing dust, washing the surface and internal parts of the equipment, especially for high-temperature equipment, and the oxides on the surface should be removed in time. Secondly, strictly control the process flow in the production process, avoid contact with pollution sources, try to avoid physical contact when using equipment, and avoid contamination by human secretion substances, such as finger prints. Protective measures such as gloves and masks are recommended. Finally, bringing contaminated items such as food and beverages near equipment should be avoided as much as possible to prevent residual contamination. In general, the Dirty PCB has a great impact on electronic equipment, and we should try our best to prevent and avoid this from happening. In order to ensure the normal operation of electronic equipment and extend the service life of the equipment, we need to continuously strengthen the protection and cleaning of the PCB. Only by actively taking measures can we avoid unnecessary losses caused by the dirty PCB.
