What Are the Types of PCB Surface Treatment Processes?

With the rapid development of modern digital information technology, PCB production innovation has actually also changed significantly, and the needs for product modern technology are getting higher and greater. Just like the motherboard in cellphones and computers currently, some usage gold and copper, that makes the advantages and disadvantages of motherboard extra evident.
Pcbandassembly helps every person to comprehend the surface area innovation on printed circuit boards and compares the benefits and drawbacks of numerous PCB surface treatment processes and appropriate circumstances.
From the look of the board refined by PCB, its look primarily has 3 colors: gold-silver-light red. Pertaining to category, gold is one of the most expensive, silver is 2nd, and the most inexpensive is light red. It is easy to see from the look whether the maker has actually reduced edges. The parts of the circuit card are primarily pure copper, described as bare copper board.

1. The advantage of bare copper board is that the cost is relatively low, the surface area is flat, and its weldability is much better without oxidation. But be careful not to be impacted by acid and temperature level. Copper is simple to oxidize in the air after being put for a long period of time.

2. The gold on the immersion gold board is gold. Even if only a slim layer of conductor is layered, the expense of this has actually made up 10% of the expense of the entire circuit card. After immersion in gold treatment, it is challenging to oxidize, can be saved for a long time, and has a smoother surface. It is suitable for welding some fine-gap pins and some tools with smaller sized solder joints, such as cellphone boards. Its expense is reasonably high and the welding stamina is reasonably inadequate.

3. The tin-spraying circuit card is silver. It sprays a layer of tin on the outside of the copper circuit. It can aid with welding, yet it can not have the very same long-term call integrity as gold. It is very easy to oxidize and rust if used for a very long time, leading to poor get in touch with. It is frequently made use of on the circuit boards of some tiny electronic items, and its price is cheap.

4. In the SMT manufacturing facility, the OSP process board is likewise called natural change movie. Since it is a natural compound, not a steel material, it is less costly than the tin-spraying procedure.
It has all the benefits of bare copper plate welding. Also ended motherboard can be dealt with once again on the surface, however they are quickly affected by acid and humidity. If the storage time is as well long, greater than 3 months, the surface area therapy must be done again. OSP is a shielding layer, so the test point requires to be published with solder paste to remove the initial OSP layer before the determine can be called for electric testing.