PCB Technical - What is the shelf life of PCBA?

PCBA is a kind of printed circuit board with various components soldered on its surface. Many people pay attention to its reliability of long-term and high-frequency operation, and need to know its storage life. Generally, the shelf life of PCBA is 2-10 years, which is mainly affected by the following factors:

What is the shelf life of PCBA?

1. Environment

Wet and dusty environment is not conducive to the preservation of PCBA. These factors will accelerate the oxidation and dirt of PCBA and shorten the shelf life of PCBA. In general, it is recommended that PCBA be stored in a dry, dust-free space at a constant temperature of 25 degree Celsius.

2. Reliability of components

The reliability of components on different PCBA also determines the shelf life of PCBA to a great extent. The components with high-quality materials and processes have the ability to resist harsh environment, with a wider range of capacity and stronger antioxidant capacity, which also provides guarantee for the stability of PCBA.

3. Material and surface treatment of printed circuit board

The material of printed circuit board itself is not easily affected by the environment, but its surface treatment process is greatly affected by air oxidation. Good surface treatment can prolong the shelf life of PCBA.

4. PCBA board running load

The high-frequency operation of PCBA is the most important factor affecting the high-frequency operation of the circuit board, which is more likely to be affected by the high-frequency operation of the circuit board. Therefore, the operating parameters of PCBA board should be in the middle range of components and avoid the peak value, which can effectively protect PCBA and extend its shelf life.

The shelf life of PCBA is a comprehensive work, which needs to follow scientific design specifications, manufacturing process specifications and operation specifications, so as to extend the shelf life of PCBA to the greatest extent.