How to check the quality and appearance of solder joints in SMT assembly?

In an era when electronic products are becoming increasingly miniaturized and lightweight,PCBThe core component, the circuit board, also needs to become smaller and lighter accordingly. For this reasonSMTSurface mount technology plays a key role. The quality and reliability of the solder joints areSMTIt plays a crucial role in surface mount technology (SMT) processing and is directly related to the overall quality of electronic products. Below is Shenzhen JJYSolder paste manufacturerLet me briefly introduce to you all how to checkSMTSolder joint quality and appearance in surface mount technology (SMT) processing:

A high-quality oneSMTFor surface mount processing solder joints, the appearance should meet the following requirements: Firstly, the surface must remain intact, smooth and lustrous, and no defects are allowed. Secondly, the weld points should have good wettability, and the ideal wettability Angle should be less than30Degree, not exceeding the maximum60Degree. Meanwhile, the edges of the welding points should present a relatively thin form. Finally, the height of the components should be moderate, and the moderate amount of solder should ensure complete coverage of the soldering areas of the pads and leads.

inSMTDuring the surface mount technology (SMT) processing, appearance inspection is also a very crucial step. Specifically, the following points need to be checked: whether any components are missing and ensuring that all necessary components have been correctly mounted; Check if the components are pasted incorrectly to avoid problems caused by incorrect mounting. Whether there are potential hazards that may cause short circuits; And check whether there is any false soldering on the components to ensure that all soldering is firm and reliable. Through these appearance checks, we can better ensureSMTThe reliability of solder joint quality and appearance in surface mount technology (SMT) processing, thereby enhancing the overall quality of electronic products.

16For many years, JJY has been dedicated to the research and development, production and sales of solder paste, providing customers with a complete set of electronic soldering solutions. If you want to learn more about solder paste, please keep following JJY Solder Paste Manufacturer and leave a message online to interact with us.