What are the advantages and disadvantages of low-temperature lead-free solder paste?

Low-temperature lead-free solder pasteWhat are its advantages? Generally, this kind contains bismuthBiIt's a bit more brittle, made of aluminum substrateLEDHigh-power lamps mostly use low-temperature solder paste, with a melting point of138Products that are not resistant to high temperatures can only use low-temperature solder paste, but the soldering performance of low-temperature solder paste is not as good as that of high-temperature solder paste. The main reason for the application of low-temperature solder paste is that the product design cannot withstand conventional temperature requirements, such asLEDorCOM1thePCB. .

Low-temperature solder paste also has its advantages and disadvantages:

Disadvantage: The low-temperature solder paste isSn-BiAlloys and solder joints are prone to brittle cracking and are not suitable for products with general strength requirements. In addition, when using low-temperature solder paste, components are prone to falling off. Especially for connector products that need to be plugged and unplugged during assembly, they are very likely to fall off. 

Advantages: Low-temperature solder paste is relatively cheaper than medium-temperature and high-temperature solder paste because it contains silver, which can reduce costs. Also because of the melting point of low-temperature solder paste138When the temperature of the furnace decreases, the energy consumption will also be reduced..