There are many kinds of
lead-free tin wires that can be used for lead-free soldering with soldering irons, such as tin-copper lead-free tin wires, 3.0 silver lead-free tin wires (305), 0.3 silver lead-free tin wires (0307), etc. Which tin wire to choose? Wire is determined by many factors, such as: the requirements of the soldered product, precision, welding effect, cost control, etc., but today many electronics manufacturers choose tin-copper lead-free tin wire. The reasons are summarized as follows:
1. Tin-copper lead-free tin wire, like other lead-free tin wires, can meet EU ROHS standards and meet environmental protection certification. The tin wires produced by Shuangchilean manufacturers have passed SGS environmental protection certification. the
2. The tin wire produced by the tin-copper alloy has a good welding effect and can meet the welding requirements of general electronic products. Whether it is the fullness of solder joints, wettability, firmness, electrical conductivity and thermal conductivity, etc., it can meet the welding requirements. the
3. Tin-copper lead-free tin wire is an alloy (Sn99.3Cu0.7) composed of 99.3% tin and 0.7% copper, without the participation of silver metal. So relatively speaking, the cost is low. The profits of today's low-end manufacturing or electronic processing industries are already very meager, and cost control is the focus of all enterprises. Of course, they hope to reduce procurement costs. Therefore, the biggest advantage of tin-copper lead-free tin wire is low cost, and it has been widely promoted by everyone, and it has become the mainstream product of lead-free tin wire. the
4. The solder joints of tin-copper lead-free tin wire are bright and lustrous, while silver-containing lead-free tin wire is a matte metal, so the luster of the solder joints is also matte, not the bright color of tin-copper alloy, so There is a slight advantage in the appearance of solder joints.
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