How does PCBA prevent dust?
PCBA processing requires a lot of protective measures, such as dust-proof, moisture-proof, salt spray, anti-static, etc. Today we will mainly talk about the dust-proof measures during PCBA processing. Anyone who is familiar with the PCBA industry knows that PCBA processing need various dust-proof measures in the process to avoid dust from adhering to the PCBA board. So what harm will dust cause to PCBA circuit boards? What are the dust prevention measures? Let's take a closer look at it below.
1. The harm of dust to PCBA board.
The harm of dust to the circuit board is not insignificant. If there is more dust attached to the board during processing, it is easy to cause short circuit and other faults, which will cause the board to fail to work normally and reduce the yield rate of production. Commonly all PCB assembly processing needs to be carried out in a dust-free room, generally at least in a million-level, and there will be also various dust-proof measures.
2. What are the dust prevention measures for PCBA processing?
(1) Dust-Proof Clothing: During PCB assembly, employees need to change into dust-free clothing when entering the dust-free room to avoid dust from being carried by the clothes.
(2) Air Shower Room: When entering the dust-free room, employees are required to enter the air shower room and rotate their bodies 365° for air shower, so as to further remove foreign objects not limited to dust attached to the cloth and body.
(3) Conformal Coating: In the production processing, PCBA is usually coated with conformal coating, so as to further prevent the damage of dust to PCBA, and at the same time, it can also play the role of moisture-proof and corrosion-proof.
(4) Vacuum Packaging: After the PCB assembly is completed, the boards will be stored in vacuum packaging to prevent dust from further adhering to the circuit board