PCBA Tech - What are the requirements for PCBA transportation and storage conditions

In order to ensure the quality of PCBA, the transportation and storage of PCBA shall also strictly comply with various operating specifications. What are the requirements for PCBA transportation and storage conditions?

1) Antistatic

Take anti-static measures for PCBA and use appropriate containers and tools.

2) Stacking requirements

It is prohibited to directly stack PCBA on transportation tools, in the turnover area, and in the process station. Especially in transportation, direct overlapping will lead to damage between components due to friction.

3) Loading and unloading requirements

During the transportation and loading and unloading of PCBA, it shall be safe and orderly. Rough loading and unloading is prohibited.

4) Prevent falling

When PCBA assembly is stored on the transportation tools and in the turnover area, it shall be protected around after stacking to avoid falling.

5) Prevent friction damage

During transportation, pay attention to whether the road surface is in good condition and whether there are obstacles, potholes, protrusions, etc. to avoid damage to semi-finished products caused by vehicle bumps. The speed of the means of transport should be balanced and reasonable.

6) Collision prevention

Watch other pedestrians and vehicles at the corners of the passage and at the head and tail of the assembly line to avoid accidental impact of other vehicles and personnel, which may cause damage to the product.

7) Prevent crushing

PCBA shall be separated by partitions and shall not exceed the upper edge of the container to avoid extrusion.

8) Exception handling

In case of tool abnormality during transportation, it is necessary to ensure the safety of personnel and goods, isolate and report.

Product storage environment:

1) Vacuum packaging.

2) Ambient temperature: 22+/- 4 °

3) Relative humidity: 30% RH-60% RH

PCBA storage conditions mainly include:

1) Application of three proofing paint

For PCBA that have not been used for a long time, they should be coated with three proof paint, which has the functions of moisture-proof, dust-proof and oxidation proof, and can effectively extend the storage time. After the three proof paint is applied, the time can be extended for 9 months.

2) Vacuum packaging

PCBA shall not be stored in contact with air and water. First of all, PCBA boards are packed with vacuum bags. When packing, a layer of bubble film is needed around the box. The bubble film has good water absorption, which plays a good role in moistureproof. Of course, moistureproof beads are also indispensable. Then classify and discharge them and label them. After sealing, the box must be stored in a dry and ventilated place separated from the wall and away from the ground, and also protected from sunlight.

3) Control the temperature and humidity of the warehouse

The temperature of the warehouse kept by PCBA should be better controlled at 23+3 ° C, 55+10% RH, the temperature in good storage conditions should be less than 25 ° C, the relative humidity should be less than 65%, the temperature should be controlled, and the indoor environment should be free of corrosive gases. For OSP PCB, because of its thin protective film, PCBA needs more strict storage conditions.