【 JJY 】 What are the importance of solder joint quality and appearance inspection in SMT assembly?

Nowadays, electronic products pursue being smaller and lighter, which makes the core part of electronic productsPCBThe circuit board needs to be smaller and lighter. To meet this demand, we need to useSMTSurface mount technology. inSMTIn surface mount technology (SMT) processing, the quality and reliability of solder joints are of vital importance to the quality of electronic products. Below is Shenzhen JJYSolder paste manufacturerLet me tell you all about the inspection methods for the quality and appearance of solder joints:

First of all, a good oneSMTThe surface mount processing solder joints should have the following appearance characteristics:

1The surface should be complete, smooth, bright and free of any defects.

2It should have good wettability. The edge of the welding point should be relatively thin, and the wetting Angle between the solder and the surface of the solder pad is preferably at30Below the degree, the maximum shall not exceed60Degree;

3The height of the components should be moderate, the amount of solder should be moderate, and the solder should fully cover the soldering parts of the pads and leads.

inSMTDuring the surface mount technology (SMT) processing, we need to conduct appearance checks on the following contents:

1Whether there are any missing components;

2Whether the components are pasted incorrectly;

3Whether it will cause a short circuit;

4Check if the components are poorly soldered or not firmly attached.

From the above introduction, we can understandSMTThe importance of solder joint quality and appearance inspection in surface mount technology (SMT) processing In actual operation, we should strictly abide by these requirements to ensure the quality and reliability of electronic products.

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