What are the differences between solder paste and solder paste in SMT production?

inSMTDuring the production process, most people tend to confuse the definitions of solder paste and flux paste, thinking they are the same. However, from a professional perspective, there will be some differences. What are the differences between the two? Next, the solder paste manufacturer will introduce it to you:

First of all, in terms of color, solder paste is gray or light gray, while flux paste is milky yellow.

Flux paste

Solder paste

From the perspective of definition:

Solder paste followsSMTA new type of soldering material has quietly emerged, which is a powder mixture produced by stirring solder powder, flux, and other surfactants, thixotropic agents, etc.

Flux paste is usually a kind of powder-like chemical substance commonly used in wood during welding operations, which plays two roles: "removing oxides" and "reducing the surface tension of the material to be welded".

From the perspective of function:

The function of solder paste: To form an alloy powder and achieve the application of electronic devicespcbThe two boards are mechanically and electrically connected.

The function of solder paste:

1,PCBADuring the brazing process of the plate, the oxides on the surface of the weldment and the liquid welding wire are removed to realize the self-worth of the liquid welding wire's spread.

2It is wrapped in a thick layer of liquid medium on the outer surface of the workpiece and the welding wire to isolate air and play an improving role.

3It plays the role of interfacial activity and continuously improves the wetting and spreading performance of liquid welding wire on the wood surface.

Flux paste andSolder pasteIt is a very important material in welding. The above are the essential differences between the two. Therefore, when making a choice and purchase, we must pay special attention. For more information about soldering, please consult JJY Solder Paste Manufacturer and leave a message online to interact with us.