PCBA Tech - Summarize PCBA processing rules and key points

There are many operating rules for PCBA processing. For example, the operating table must not have irrelevant debris, the work table must be kept clean, the PCBA patch cannot be held by hand, and the operation must be strictly in accordance with the process, and the processing must also be understood. Commonly used tags,

There are many operating rules for PCBA processing. For example, the operating table must not have irrelevant debris, the work table must be kept clean, the PCBA patch cannot be held by hand, and the operation must be strictly in accordance with the process, and the processing must also be understood. Commonly used labels, you need to regularly maintain equipment and other matters, then I will introduce the relevant content in detail for you.

1. The operating rules of PCBA processing

1. There should not be any food or drink in the PCBA work area, stop smoking, do not place sundries that are not related to the work, and keep the workbench clean and tidy.

2. During PCBA processing, the welded surface cuts cannot be taken with bare hands or fingers. The grease secreted by human hands will reduce the weldability and simply present welding shortcomings.

3. The operation process of PCBA and components is reduced to a minimum to prevent risks. In the assembly area where it is necessary to use gloves, soiled gloves will be contaminated, so gloves must be replaced frequently when necessary.

4. Do not use skin-protecting oils to coat hands or various silicone-containing detergents, as they can cause problems in solderability and adhesion of conformal coatings. There is a detergent specially made for PCBA soldering surface available.

5. For EOS/ESD sensitive components and PCBAs, it is necessary to mark them with appropriate EOS/ESD marks to avoid mixing them with other components. In addition, in order to prevent ESD and EOS from endangering sensitive components, all operations, assembly and testing must be completed on a workbench that can handle static electricity.

6. Regularly inspect the EOS/ESD workbenches and acknowledge that they can work normally (anti-static). Various risks of EOS/ESD components can be caused by improper grounding methods or oxides in the ground connection parts. Therefore, special maintenance should be given to the joints of the "third line" grounding terminal.

7. Prevent stacking PCBA, which will cause physical damage. The assembly work surface should be equipped with various special brackets, which are placed according to the type.

In PCBA processing, these operating rules should be strictly followed, and the correct operation can ensure the final application quality of the product, reduce the damage of the components, and reduce the cost.

2. Precautions for PCBA processing

1. Before operating the placement machine, you must understand the common labels of the placement machine.

2. Before starting the placement machine, the operator should conduct a comprehensive inspection of the machine.

3. The start-up operation sequence of the placement machine must be strictly implemented. The placement machine must have detailed operating instructions.

4. Troubleshoot and maintain the placement machine in a timely and regular manner.

5. Main PCBA processing of medical PCB equipment. The extension of the encoded image file stored in the jpeg file interchange format.