The board with various components soldered on the surface of the printed circuit board is called PCBA. With the development of science and technology, people pay more and more attention to the usage time of PCBA and the reliability of high-frequency operation, therefore, also pay more and more attention to the shelf life of PCBA. Under normal circumstances, the preservation period of PCBA is 2~10 years. Today, China PCBA Manufacturer SYS Tech will bring you the factors affecting the preservation cycle of PCBA finished boards. Let's take a look.
Factors influencing the storage cycle of PCBA finished boards
1. The environment
The humid and dusty environment is obviously not conducive to the preservation of PCBA. These factors will accelerate the oxidation and fouling of PCBA and shorten the shelf life of PCBA. Generally, it is recommended to store PCBA in a dry, dust-free, and constant temperature environment of 25°C.
2. Reliability of components
The reliability of components on different PCBAs also determines the shelf life of PCBA to a large extent. Components using high-quality materials and processes have the ability to withstand harsh environments. They have a wider range of capabilities and stronger oxidation resistance, which also provides a guarantee for the stability of PCBA.
3. Material and surface treatment process of printed circuit board
The printed circuit board material itself is not easily affected by the environment, but its surface treatment process is greatly affected by air oxidation. Good surface treatment can extend the shelf life of PCBA.
4. PCBA board operating load
The workload of PCBA is the most important factor in its shelf life. High-frequency and high-load operation will have a continuous high impact on the circuits and components of the circuit board, which are more likely to be oxidized under the influence of heating, resulting in short circuits and open circuits during long-term operation. Therefore, the working parameters of the PCBA should be in the middle range of the component to avoid approaching the peak value, so as to effectively protect the PCBA and extend its storage life.
