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Soldering machine manufacturers tell you how to choose solder paste

Solder paste is an indispensable flux in the soldering process of automatic soldering machine. A good solder paste can not only increase the efficiency of our solder, but also effectively extend the life of the soldering iron.

 

In fact, we choose solder paste mainly according to the actual value of the product according to the value and use of the product, the assembly density of the surface assembly board, PCB and component storage time and surface oxidation degree, production line process conditions, etc., different products should choose different Solder paste.


The composition, purity and oxygen content of the solder paste alloy powder, particle shape and size, flux composition and properties are the key factors determining solder paste properties and solder joint quality.

 

1. High-reliability products require high-quality solder paste according to the value and use of the product itself.

 

2, according to PCB and component storage time and surface oxidation degree to determine the activity of solder paste

 

3. Select the solder paste alloy composition according to the assembly process of the product, the specific conditions of the printed board and components.


4, according to the product (surface assembly board) requirements for cleanliness to choose whether to use no-clean

 

5, BGA and CSP generally need to use no-clean solder paste

 

6. When soldering the thermal element, a low melting point solder paste containing bismuth should be used.


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