At present,Lead-free low-temperature solder pasteIt is mainly used for welding electronic products, heat sinks and other materials that have relatively low requirements for welding temperature. When the surface mount component cannot withstand more than180℃When the temperature is high and a surface mount reflow process is required, we will use lead-free low-temperature solder paste for soldering. So, what is the melting point of lead-free low-temperature solder paste? The solder paste manufacturer will explain it to everyone:

The main component of lead-free low-temperature solder paste isSn42Bi58The melting point is138℃It is the solder paste with the lowest melting point among lead-free solder pastes. Because it contains no lead and has a low melting point, it can prevent electronic components from being scorched by high temperatures during the soldering process, such as plastic and switch components, andLEDFor components like small light beads, lead-free low-temperature solder paste is quite suitable.

The particle size of the tin powder in lead-free low-temperature solder paste is between25~45or20～38umBetween them, the working temperature of reflow soldering is usually at170-180℃. It has strong weldability, good wettability, and leaves very little residue after welding, especiallyledNowadays, many manufacturers in the industry prefer lead-free low-temperature solder paste as the soldering material. 

It should be noted that in lead-free low-temperature solder pasteBiThe content has reached58%Therefore, it is slightly inferior to lead-containing solder paste in terms of soldering firmness. This situation can be chosen based on the actual circumstances. If you want to know about lead-free solder paste, flux paste and leaded solder paste, please follow the online message of JJY Solder Paste Manufacturer to interact with us.