What is red glue? What is solder paste? What‘s the difference?

With the electronic industry products more and more sophisticated, the size of components and PCB board and product diversification, came into being some electronic accessories, of which solder paste and SMT patch red glue are indispensable materials in the electronic industry, what is the difference between the two products, the following content will give you the answer.

What is red glue

SMT red glue is a stable single-component epoxy resin adhesive applied to the SMT field, mainly used to fix components on the printed board, generally distributed by dispensing or steel mesh printing, pasted components into the oven or reflow welding machine heating hardening

What is solder paste

Solder paste is a new type of welding material developed along with SMT. It is a paste mixture formed by mixing solder powder, flux and other surfactants and thixotropic agents. Mainly used in SMT industry PCB surface resistance, capacitance, IC and other electronic components welding.

What‘s the difference between these two products

1, solder paste and SMT red glue from the appearance of the color is different, solder paste for gray paste; SMT red glue is red paste.

2, from the performance point of view: SMT patch red glue once heated and hardened, reheating will not melt, that is to say, the hot hardening process of SMT patch red glue is irreversible, which is the solidification phenomenon of SMT patch red glue. The solder paste is not solidified after welding, and the welding point formed can be melted into tin water again at high temperature, such as poor welding can be sucked away with a tin absorber.

3, from the process point of view, the red glue is the dispensing process, suitable for the use of circuit boards with fewer points; The solder paste uses the furnace printing process, which can print a large number of circuit boards at a time.

4, from the quality point of view, compared with solder paste, red glue is more affected by the climate environment, high defective rate after welding, more likely to produce parts and missed welding. The solder paste has a strong weldability, and the solidity of the welding is relatively high.

5, from the point of view of the use effect, red glue on the surface of the SMT can have a fixed effect, but not conductive; The solder paste not only can be fixed, but also has a good conductive effect.