【 JJY 】 How to Choose Solder Wire?

Solder wireIt is widely applied in many fields such as electronics, electrical appliances, refrigeration, automobiles, etc. Its functions are mainly used for components,PCBThe micro-connection or repair welding of many components such as plates or pipes is one of the indispensable key products for ensuring product quality. However, many people do not know how to choose solder wire. Now, Shenzhen JJY Solder Wire Factory will explain the following aspects of elements:

1Solder wire composition

When buying solder wire, the first thing to consider is its composition. In the early days, the mainstream solder wire was mainly composed of tin and lead, but now becauseRoHSDue to the limitations of the standards, the content of several other elements, including lead, is not allowed to be too high. As a result, the mainstream has become environmentally friendly lead-free solder wires mainly composed of tin and copper, and a step further, halogen-free solder wires.

When choosing solder wire, we need to check whether the product has itRoHSIf there are any requirements for standards, choose tin-copper alloy. In addition, on the basis of tin-copper alloy, there is also silver-containing solder wire with added silver. Silver is stable in nature, with excellent electrical and thermal conductivity, making it suitable for high-demand products.

2The level of welding temperature

According to the temperature during welding, solder wires can be classified into three types: high-temperature, medium-temperature and low-temperature. Some plates cannot withstand excessively high temperatures during welding, which may cause them to bend or even melt, resulting in defective products.

3Rosin cores and solid cores

Solder wire is further divided into rosin core and solid core types. Under the same alloy conditions, solid solder wire has a longer shelf life compared to rosin solder wire. There is no need to worry about the evaporation of flux in the solder wire, and it also reduces the oxidation of the solder wire. Moreover, solid tin wire, as it does not contain rosin, has a much lower probability of being tin blasted.

In addition, solid tin wire can be flexibly combined with different fluxes to achieve soldering between different products. Of course, there are also disadvantages. Since the solid core itself does not contain flux, we need to add it separately during welding, which requires high welding skills and also affects the welding efficiency.

4Washable and no-clean

The no-cleaning solder wire uses non-corrosive flux. The residual substances from soldering do not affect the impedance value of the product, and there is no problem of corroding the solder joints after long-term use. The residue left after washing the tin wire has the problem of corroding the solder joints and has a certain impact on the impedance value. Therefore, deionized water, ultrasonic rinsing or water gun flushing are needed. However, there may be small residues on no-clean tin wires after soldering, while water-washed tin wires, after being rinsed with deionized water, have no residues left, making them cleaner and more thorough. They are generally used in electricity meters, high-frequency vibration cameras, and military products.

5Tin wire diameter

Although the wire diameter does not affect the performance of the tin wire, it has a considerable impact on our soldering work. The diameter of the solder wire is usually0.1mm~3.0mmBetween. Large-diameter solder wires are suitable for the welding of large-area solder joints and can complete the welding quickly and effectively. On the contrary, small-diameter solder joints are more suitable for the welding work of fine solder joints.

If an automatic soldering machine is used, with a larger diameter, it is more difficult to break during the wire feeding process and continuous soldering can be carried out. Small-diameter ones are prone to breakage, so they need to be used with high-quality solder wires or automatic soldering machines.

6Brand

Finally, there is the brand. After so many years of development, there are already many well-known soldering brands in the market, such asAlphaLove LawYTYunxiQLGQiangli, JJY, YichengdaSenjuSenju, Weitou, etc. These brands have all been developed and produced over many years, certified by professional institutions, and have stood out after being evaluated by a large number of customers. They are reliable in terms of quality and service, and have a complete range of products.

However, if the solder is from a small workshop or operated without a license, there may be problems such as poor raw materials, insufficient solder degree, and excessive impurities. Moreover, if there are quality issues, it is very likely that the manufacturer cannot be found. Therefore, it is suggested that everyone should not try to save a little cost and cause problems with the product. In the end, you will be exhausted and suffer even greater losses.

JJY Solder Paste Factory produces a wide range of solder paste products, including lead-free solder paste, halogen-free solder paste, silver-containing lead solder paste, syringe solder paste, environmentally friendly solder wire, nickel-plated environmentally friendly solder wire, silver-containing environmentally friendly solder wire, lead-free solder bars, high-temperature solder bars, etc. We offer technical support. If you have any soldering needs or technical questions, please feel free to leave a message online to interact with us!