Each PCB board manufacture process is very complex.
There are many articles to introduce those PCB manufacture process, and David wants to do something different.
Above is the reason why create this metal core PCB manufacture process article.
Related Metal core PCB etching manufacture process
Also a metal core PCB etching manufacture is a complex process too.
To help our readers to understand more clearly, we have to introduce some related meta core PCB etching manufacture processes.
In the manufacturing process of MCPCB, people should pay attention to the artwork manufacturing, material preparation, image transferring, etching, surface treatment and profile, etc.
PCB Manufacture Artwork must consider compensation
If you first read PCB Manufacture Artwork articles, you may feel strange to this.
Because of the existence of the side etching, early Metal core PCB board can not meet the accuracy of the traces.
So they create PCB engineer do some compensation when manufacturing artwork.
But there were another problem to appear, and how many compensations.
To be honest, there were exact theory can give you the real truth.
The decades MCPCB design engineer will confirm according to the value of side etched with different thickness, the artwork is negative.
The size of protective film
This is very easy to ignore the issue about metal core PCB manufacture process.
Even some small MCPCB factory also don’t know the size of protective film.
Normally the PCB engineer will design a fixed size of 300×300 MM, and the surface of aluminum size should have protective film.
During the process of aluminum PCB layer image, it usually use 0.3 mm epoxy board, which the size is the same as the aluminum PCB board, and use the tape to blockade and compaction to avoid solution infiltration. After the treatment on copper surface, the best way is to use the chemical micro etching, and then after bake it should deal with wet film to prevent oxidation.
In the process of etching in Aluminium PCB, need to use test boards to adjust the solution to ensure the best etching results.
After etching on Aluminum PCB, the best way is to use SN solution to do strip immediately.