The so-called tin spray is to soak the custom printed circuit boards into the melting of tin lead, when the surface of the circuit board is attached to the tin lead, and then use hot air pressure to remove excess tin lead.

Tin Lead cooling circuit board welding area will be stained with a layer of the appropriate thickness of tin lead, which is the outline of the spray process. PCB surface treatment technology, currently the most widely used is the tin spraying process, also known as hot air leveling technology, that is, a layer of tin sprayed on the pad, in order to enhance the performance and weldability of PCB pads.

In the usual PCB surface treatment, the process is called the best solderability solderability. We can also supply the fast PCB prototype, aluminum board PCB etc. If you need , welcome to contact us.