As an environmentally friendly welding material,Lead-free solder pasteIt is composed of different proportions of environmentally friendly metal elements, among which tin, silver, copper, bismuth, etc. are common components. So, what are the differences between lead-free solder paste containing silver and environmentally friendly solder paste without silver? The common points of silver-containing solder paste and lead-free solder paste without silver: Both are lead-free solder paste series products and both comply with the European UnionROHSHowever, there are also several differences in instructions. Next, Shenzhen JJY Solder Paste Manufacturer will introduce the specific distinctions in detail for everyone:

1. Different components: Lead-free solder paste containing silver is composed of tin-silver-copper or tin-bismuth-silver alloys. It is like a shining star, rich in precious silver elements, while lead-free solder paste without silver is composed of tin and copper or tin and bismuth elements.

Second, different melting points: Due to the differences in metal alloys, their natural melting points also vary. containing3.0The melting point of silver solder paste is:217­°CThe melting point of lead-free tin-copper solder paste without silver is:227­°CThe difference between the two10­°CTin42bismuth58Its melting point is138°C.

Three, different colors of solder joints: The luster of solder joints can affect the aesthetic appeal and color of their appearance. Because silver is a matte metal and not very bright, the solder joints of silver-containing solder paste have a slightly darker color and a matte finish, while the solder joints of lead-free solder paste without silver have a brighter color and show a certain luster.

Four. Different performance: Due to the addition of silver, silver-containing solder paste has higher solder joint firmness and better strength than lead-free solder paste without silver. At the same time, it is close to eutectic with silver alloys, and the solder joint reliability is the highest. In addition, electrical conductivity is also a very important indicator in solder joints. Silver is a metal with excellent electrical conductivity. Therefore, solder paste containing silver has better electrical conductivity and thermal conductivity than lead-free solder paste without silver.

Five. Different costs: Due to the high price of silver metal, the cost of silver-containing solder paste is higher than that of lead-free solder paste without silver. This is the greatest advantage of copper-containing lead-free solder paste.

Shenzhen JJY Industrial Technology Co., Ltd. is a professional manufacturer of various types of solder paste. We offer:QFNHigh solder climbing rate solder paste, zero halogen solder pasteVOIDLow-porosity solder paste, laser solder paste, water-washed solder paste, and high-reliability ones used in military, aerospace, power, photovoltaic and other industriesSn62Pb36Ag2Solder pasteSn62.8Pb36.8Ag0.4Solder paste6337Solder paste, transparent and colorlessLEDHigh-brightness anti-monument solder pastemini-LED/micro-LEDDie bonding solder paste, high-reliability lead-free low-temperature solder paste, low-temperature solder paste for heat sinks, professional solder paste for hardware soldering, lead-free medium-temperature solder paste, lead-free high-temperature solder paste0307/105/305Manufacturers of solder paste and other soldering materials. Our products are of excellent quality, reasonable price and considerate service. We welcome inquiries and orders from all customers.