Lead-free high temperature solder paste is made of spherical powder alloy with extremely low oxygen content, tin 96.5% silver 3.0% copper 0.5% and cationic carrier under vacuum and nitrogen are mixed evenly by imported equipment, the melting point is 217 ℃, and it is suitable for the current tin Higher soldering process temperatures for lead-free electronic components such as silver copper and tin silver. Lead-free high-temperature solder paste has very good wetting ability in lead-free soldering, the solder joints are plump, and the rosin residue will not overflow the solder joints, eliminating the conductive phenomenon of rosin.
Application scope of lead-free high temperature solder paste:
The lead-free high-temperature solder paste has excellent anti-your ability, can still guarantee 12 hours under continuous printing conditions, and the solder paste has excellent adhesion. The content of this solder paste meets the requirements of the ROHS directive and has excellent environmental protection. It is widely used in high-frequency tuner array products and small SMD components, and the soldering effect of plug-in components is better than that of wave soldering, and it has excellent soldering reliability and does not require cleaning.
What is the difference between high temperature solder paste and low temperature solder paste
Low temperature solder paste is lead-containing solder paste from the beginning, and high temperature solder paste is lead-free solder paste.
Low-temperature solder paste has a content of 63/37, 63% is tin, and 37% is lead. The reason for using lead is to lower the melting point of tin. Because early electronic components are very sensitive to high temperatures. The above content of solder is unknown. It has been used for several years, until people understand more and more about lead poisoning. Now many European countries can't use leaded solder before.
The melting point of pure tin is very high, but if almost 1% silver is added, the melting point will drop, although it is still several tens of degrees higher than 63/37 tin.
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