What should be noted when printing lead-free solder paste 305 and 0307? What's the difference?

Lead-free solder paste305with0307All belong to the silver-containing environmental protection series products and have passedROHSCertification is all forSMTReflow soldering. What are the differences between the two products?SAC0307It is an amorphous solid and has no fixed melting point. The temperature at which melting begins is217to220CIt should be completely turned into a liquid227C,SAC305It is also an amorphous solid and has no fixed melting point. The temperature at which melting begins is217CIt should be completely turned into a liquid220CNow, JJY solder Paste Manufacturer will explain these two products:

Lead-free solder paste305and0307The differences in silver content between them are as follows:

1The silver content of the two types of solder pastes is different:305Lead-free solder paste is containing3%Of silver, and0307Lead-free solder paste is containing0.3%Silver.

2Different melting points: Due to the varying silver content, the alloy structures formed are different, and the melting points also change accordingly. containing3.0The alloy of lead-free silver solder paste is:Sn96.5Ag3.0Cu0.5Its melting point:217-220Degree. And contain0.3The alloy of lead-free silver solder paste is:Sn99Ag0.3Cu0.7Its melting point:217-227Degree.

3The performance differences are mainly reflected in aspects such as firmness, fatigue resistance, and electrical conductivity. Among them,3.0Silver lead-free solder paste is the most complete type of solder paste in all aspects and is also the most commonly used lead-free solder paste recognized internationally for the time being. The higher its silver content is, the better its comprehensive performance will be. At the same time, the tin climbing rate and fullness are also included3.0The strengths of lead-free solder paste.

4The costs are different: As silver is a very expensive metal and is greatly affected by foreign market conditions.3.0The price of lead-free silver solder paste is0.3Twice as much as silver.

5Different application scopes:3.0Silver can basically be used for soldering all components, and it can be applied to high, medium and low-end requirements. while0.3Silver lead-free solder paste can only be used for the soldering of general consumer electronic products. Relatively speaking, it is more suitable for the soldering of medium and low-end electronic products. The soldering effect is not very good for overly precise soldering, such as tight pinsIC,0402Components, etc.

For those who want to know about solder paste, solder paste, low-temperature solder paste, solder wire and solder bar, welcome to consult Shenzhen JJY Industrial Technology Co., LTD. Let's learn and grow together!