What is the difference between silver-containing solder paste and regular eco-friendly solder paste?

Lead-free solder paste, as an environmentally friendly soldering material, is made by mixing a variety of metal alloys in specific proportions. Common ingredients include tin, silver, copper and bismuth. Next, we'll explore the differences and similarities between silver and copper lead-free solder pastes. Although they both belong to the same lead-free solder paste category and are both EU ROHS certified, sharing many of the advantages of lead-free solder paste, there are still differences in the following areas. The following is a detailed analysis of the JIAJINYUAN solder paste manufacturer for you:

Difference:

1. melting point: the melting point of silver-containing lead-free solder paste is usually lower than that of copper-containing lead-free solder paste.

2. Thermal stability: copper lead-free solder paste thermal stability is relatively good, suitable for higher temperature environment.

3. Tensile Strength: The tensile strength of copper-containing lead-free solder pastes is usually higher than that of silver-containing lead-free solder pastes.

4. Solderability: Silver-containing lead-free solder pastes flow better during soldering, while copper-containing lead-free solder pastes may require higher temperatures during soldering.

Similarities:

1. environmental protection: both meet the requirements of the EU ROHS certification, with environmental advantages.

2. soldering effect: both soldering effect is better, suitable for a variety of soldering processes.

3. welding temperature: both welding temperature is similar, applicable to the same working environment.

I hope the above information is helpful to you. For more knowledge about lead-free solder paste, please continue to pay attention to Jiajinyuan solder paste manufacturers.

First, the composition of the difference: silver lead-free solder paste from tin, silver, copper or tin, bismuth, silver alloy composition, which contains precious silver elements, like a bright star; and copper lead-free solder paste is mainly composed of tin and copper alloys, only contains ordinary copper elements, like a solid rock.

Second, the melting point difference: there are differences in the melting point of various types of alloys. For example, contains 3.0% silver solder paste melting point of 217 degrees Celsius, its nature is similar to water beads, easy to melt; relatively, containing copper lead-free solder paste melting point of 227 degrees Celsius, similar to ice, need to absorb more heat to dissolve.

Third, the difference between the color of the solder joints: the color of the solder joints directly affect the appearance of the solder joints and the tone of the beauty. Silver as a matte metal, its brightness is not high, so the use of silver-containing solder paste solder joints color is dull, showing a matte texture, like a shrouded cloud, giving people a sense of melancholy; relatively speaking, copper lead-free solder paste solder joints color is more bright, the surface with a certain luster, like a beam of warm sunshine, let people feel warm and comfortable.

Fourth, the performance comparison: the introduction of silver elements, silver-containing solder paste compared to lead-free solder paste containing copper, showing a higher degree of solidity and strength to ensure that the solder joints are more stable, such as steel bars that can withstand a variety of external forces. In addition, electrical conductivity in the quality of solder joints occupies a key position, the silver metal because of its excellent electrical conductivity, so that the silver-containing solder paste in the electrical conductivity and thermal conductivity and other aspects are better than the copper-containing lead-free solder paste. It is like a wire, effectively transferring current and heat.

Fifth, the cost difference: Given the high price of silver metal, the cost of silver-containing solder paste compared to copper-containing lead-free solder paste to be high. This is a significant advantage of copper-containing lead-free solder paste. The higher the silver content, the higher the cost of the solder paste. It can be said that it is similar to a high-end consumer product, which needs to bear a higher cost.

Suzhou Nofil specializes in the research and development and production of various types of solder paste and tin wire products, the main products include LED special solder paste, leaded solder paste, silver-containing leaded solder paste, stainless steel plate-type solder paste, SMT-applicable solder paste, lead-free flux paste, no-clean solder wire, lead-free solder wire, leaded solder wire, wave soldering solder bars, and auto-soldering solder wire, etc., it is a comprehensive solder paste, tin wire solder wire production and manufacturing enterprises.

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