How to choose solder paste during SMT assembly?

SMTSurface mount technology (SMT) processing is one of the core technologies in the field of modern electronic assembly. inSMTDuring the surface mount technology (SMT) processing, the selection of solder paste is of vital importance as it directly affects the soldering quality, production efficiency and the performance of the final product. Next, Shenzhen JJY Solder Paste Manufacturer will briefly introduce itSMTDuring surface mount technology (SMT) processingSolder pasteHow to choose:

1Solder paste is generally classified into high, medium and low temperature solder paste based on temperature, and these need to be combinedPBCThe actual reflow soldering times of the board andPCBTake into account the temperature requirements of the components comprehensively.

2The cleaning degree of the plates and the cleaning process after welding are the sameSMTCommon reference factors for surface mount technology (SMT) factories when choosing solder paste types. For example, the no-clean process requires the use of no-clean solder paste that is free of halogens and strong corrosive compounds. The solvent cleaning process requires the use of solvent cleaning solder paste, and water-soluble solder paste needs to be used in the water cleaning process.

3,PCBThe storage time of the components and the degree of surface oxidation are also thereSMTWithin the consideration of the surface mount technology (SMT) factory, it is generally adoptedKJRMAProducts with higher reliability requirements can be selected for this gradeRGrade, it is required for use if it has been stored for a long time or has severe surface oxidationraGrade.

4The particle size of the alloy powder in the solder paste is also a parameter that needs to be selected, and this should be based on the actual situationSMTThe selection is based on the assembly precision of surface mount technology (SMT) processing.

5Select the viscosity of the solder paste based on the process of drop coating or printing and the assembly precision. High-precision printing requires high viscosity, while drop coating requires low viscosity.

During the selection process, you may not only consider the above issues but also make your choice based on other important process requirements. These are for reference only. The above is all the content brought to you by JJY today. For more related information, please search for "JJY" to view. Welcome everyone to interact!