1. Coating three anti-paint
For PCBA boards that have not been used fora long time, three-proof paint should be applied, which has the functions ofmoisture-proof, dust-proof and anti-oxidation, which can effectively prolongthe storage time. After applying the three-proof paint, the time can beextended for 9 months.
2. Vacuum packaging method
PCBA storage is not in contact with air andwater. First, the PCBA board is packaged in a vacuum bag, and a layer of bubblefilm needs to be surrounded on the side of the box when packing. The waterabsorption of the bubble film is better, which plays a good role in preventingmoisture. Less. Then sort them out and label them. After sealing, the box mustbe separated from the wall and stored in a dry and ventilated place away fromthe ground, and should also be protected from sunlight.
3. Control the temperature and humidity ofthe warehouse
The temperature of the warehouse where PCBAis stored is best controlled at 23±3°C, 55±10%RH, the temperature in goodstorage conditions is less than 25°C, the relative humidity is less than 65%,with temperature control, and the indoor environment is free of corrosivegases.
For the PCB of OSP process, due to its thinprotective film, more stringent storage conditions are required for PCBAstorage.