Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens Coje_He, Leonardobabe, radon Rn for the clue delivery! CTOnews.com February 13 news, bilibili maintenance UP master @ notebook repair boy recently released a video on the Internet, saying that he received a number of small new lightweight books with the same problems, questioning Lenovo's "planned scrap" through low-temperature solder paste welding technology.

This evening, the Lenovo Xiaoxin official released the "Technical instructions on the use of low temperature solder paste for the use of low temperature solder paste", saying that the relevant description is seriously inconsistent with the facts:

1. Low temperature solder paste welding is a mature and more environmentally friendly technology in electronic production line.

The main composition of the new low temperature tin paste is tin-bismuth alloy, and its melting point is 138℃. When it is lower than 138℃, it is in a stable solid state.

The welding temperature of low temperature solder paste is 180℃, which is significantly lower than that of 250℃ welding at room temperature, so the thermal deformation of components is smaller and the quality of motherboard is more stable and reliable. At the same time, the welding energy consumption is low, and it is more energy-saving and environmentally friendly. This technology is a mature technology in the industry, which has been widely used in the production and manufacture of electronic products.

two。 The low temperature solder paste welding technology meets the national and international standards and has been certified in large quantities for many years.

Lenovo has a strict R & D and testing process, which meets national and international quality standards. Under normal use, the temperature of each device is about 70-80 ℃, and the limit temperature is lower than 105 ℃, which is much lower than the softening threshold of low temperature solder paste, and there is no reliability problem in long-term normal use.

According to the after-sales data of small, new and thin books over the years, there is no difference in repair rate between models with low-temperature solder paste welding technology and those with room temperature tin welding technology. No matter if you have any problems with your new products, please feel free to contact us and we will help you solve them.

CTOnews.com found that Lenovo Xiaoxin official also posted a verification video, using Xiaoxin 15 2020 sharp dragon version, recorded a set of welding strength test videos at different temperatures, and the results showed that there was no problem with the reliability of welding strength.

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