smtSolder pasteWhat is the difference between medium tin powder and flux?When choosing a manufacturer, it is often very difficult to make a decision,Nowadays, the electronic society is developing more and more rapidly. Many people use flux because it is a mixture mainly composed of rosin, which is an auxiliary material to ensure the smooth progress of the soldering process. Welding is the main process in electronic assembly, and flux is an auxiliary material used during welding. So, how to put itsmtWhat are the differences between solder paste and solder powder, and how to choose them? Let's take a look below:

The functions of flux can be summarized as follows: "assisting heat conduction", "removing oxides", "reducing the surface tension of the material to be welded", "removing oil stains on the surface of the material to be welded and increasing the welding area", and "preventing re-oxidation". Among these aspects, the two most crucial functions are: "removing oxides" and "reducing the surface tension of the material to be welded".
Strictly speaking, solder paste is used to solder large metal parts, such as hot pot POTS, galvanized iron lead buckets, etc. At the moment the soldering iron comes into contact, the solder paste will produce gas due to the high temperature of the soldering iron, and the dirt on the surface of the metal to be soldered is quickly removed, so it is relatively easy to "solder", but the harm is also great. It is acidic by itself and corrosive to the metal around the solder joint. This is secondary. The biggest drawback is that when interacting with the paste at high temperatures, it will produce a water-like liquid, which has a much stronger electrical conductivity than water. Therefore, it is not suitable for electronic circuits with very close solder joints.

The difference between flux and solder paste:

1Different raw materials:

Solder paste

Paste-like viscous body, mainly composed of metal powder, rosin, organic acid, thixotropic agent and active agent. ForSMTWelding in the automatic mounting process. It is an upgraded alternative to flux and soldering process, with a high degree of automation and high soldering accuracy.

Rosin

Solid pine resin, the raw material for making flux. It mainly helps to remove the oxides on the solder pads during the soldering of circuit board components, which is beneficial for the soldering of solder.

Flux

It is an auxiliary material for welding. However, flux is composed of rosin, active agents and some additives, and is processed on the basis of rosin. It has stronger performance and is more convenient to use than rosin

The solder paste of Shenzhen JJY brand is suitable for your choice. We offer a solution tailored to your needs.Solder pasteFor solder wire, solder bar and flux paste, choose JJY Solder Paste Manufacturer.