How to determine the quality of solder joints in SMT assembly?

SMTSurface mount technology (SMT) processing is of vital importance to the development of electronic products. The direction of high precision and miniaturization cannot do without SMT processing, and solder joints are indispensableSMTIt also plays a very important role in processing, as the quality of the weld points is determined by itPCBAWhether the quality is reliable. SoSMTHow to determine the quality of solder joints in surface mount technology (SMT) processing? BelowSolder paste manufacturerLet me give you a brief introduction:

I. Appearance:

1,SMTThe surface of the processed solder joints is smooth and bright, and remains intact without any defects.

2The solder joint should have good wettability. The edge of the solder joint should be relatively thin, and the wetting Angle between the solder and the surface of the solder pad should be less than300The following is better, and the maximum should not exceed600;

3,SMTThe height of the components should be moderate, and the amount of solder should also be controlled within a reasonable range to fully cover the soldering areas of the pads and leads.

Ii. Inspection:

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.

SMTThe production quality of solder joints in surface mount technology (SMT) processing needs to be inspected in actual usePCBAThe board must not fail during its service life. Only in this way can the product quality be ensured.

JJY, as a company that owns15A solder paste manufacturer with a long history, it has been committed to the research and development and production of solder paste for many years. The quality of the solder paste is stable. If it doesn't come together, it's not worth soldering and won't be used as a monument. No residue, Wuxi beads, bright and full solder joints, firm solder joints, and good electrical conductivity. If you have any needs, please feel free to contact us.