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PCBA Tech

PCBA Tech - What preparations need to be made for smt patch before soldering

PCBA Tech

PCBA Tech - What preparations need to be made for smt patch before soldering

What preparations need to be made for smt patch before soldering

2021-09-01
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Author:Belle

When processing smt patches, the design of the product is very important. Excellent design can greatly improve the quality of the product and exert a better effect in the process of use. After the design is completed, the specific processing process requires the efforts of workers, and the products processed by different workers on the same design are often quite different. The reason for this is that welding is very important for its processing, and the welding effect of different people is very different.


Although they are all processing products, there is a big difference between skilled workers and novices. Although the latter knows the basic process very well, because they do not have enough experience, it is inevitable that some problems will occur during processing. For example, the welding of smt patch is actually very important. Many novices often ignore it. The final welding effect is naturally not even satisfactory.

smt patch

Before smt patch welding, the first thing we have to do is to remove the oxide layer of the welding part. Generally speaking, all companies are well-preserved for welding components, and will try to avoid oxidation. However, oxidation is also inevitable. If these parts are not removed before welding, it will have a great impact during welding and will cause great interference to the determination of the welding point. In this process, it is best to use rosin alcohol solution for smearing after exposing the metallic luster to avoid oxidation after exposure.


The smt patch processed by some small and medium-sized enterprises will have many small defects. Although it does not affect the final use, it has a great impact on the service life of the product. And this kind of problem will arise, largely because when it is soldered, the soldered leads are not tinned. After summing up years of experience, excellent employees are already very familiar with how to tin-plated leads for a short time, and it can be done easily without consuming too much time and energy.