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Tinned Flux vs. Regular Flux

Before diving into the comparison, it is important to understand the role of flux. Flux is a chemical agent applied during the soldering process that removes oxides from the metal surface, prevents further oxidation during soldering, and improves the flow of the solder. Without flux, soldering can result in poor connections, impaired electrical properties, and reduced durability.
Tinned Flux vs. Regular Flux
27 December 2024
Views: 19
The two common flux types are tinned flux and regular flux. Flux is a necessary material in the soldering process to ensure a clean surface and a strong connection. But both types have different uses, what is the difference between them?

What is flux?
Before diving into the comparison, it is important to understand the role of flux. Flux is a chemical agent applied during the soldering process that removes oxides from the metal surface, prevents further oxidation during soldering, and improves the flow of the solder. Without flux, soldering can result in poor connections, impaired electrical properties, and reduced durability.

What is tinned flux?
Tinned flux, also known as solder paste with flux, is a flux that already contains small particles of solder alloy, combining the cleaning action of flux with the functionality of solder, making it a two-in-one solution. Tinned flux is used for SMT.

What is regular flux?
Regular flux is a standalone material without any solder particles. It is mainly used to prepare the soldering surface and ensure a clean bond between the component and the solder.

Tinned Flux VS Regular Flux

Feature Tinned Flux Regular Flux
Composition Contains solder particles + flux Only flux, no solder included
Application Applied with stencils or dispensers Applied with a brush or dropper
Efficiency Faster, combines two steps in one Slower, requires separate solder
Best Use Case SMT, small components, high precision Through-hole soldering, repairs
Convenience More convenient for mass production More flexible for general use


Conclusion
Both tinned flux and regular flux play a vital role in soldering, but they serve different purposes. Tinned flux is great for precision and efficiency, especially in high-volume production. Regular flux, on the other hand, is a versatile and affordable choice for a variety of soldering applications.
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