Thursday 26 September 2013

Custom PCB Manufacturer And Its Wonder

By Dawn Williams


We always use electronic devices but may have not known what is behind its functionality. These use a Printed Circuit Board to associate one segment to another. Designing your own board was never acknowledged in the past few years. But today, some of the companies like custom PCB manufacturer accept this idea.

Some of the processes to be done in doing a PCB are to follow. Get your phototools ready, this is the very first thing to do above anything else. To be able to create a film, the need to have a Laser Photoplotter is very important. It will copy the data of the board and have it printed as an image. The film will proceed to the next step once it got printed.

Now you will be printing the inner layer. This is composed of a layer of epoxy resin and a core made up of glass fiber with a copper foil in each side. Make sure to clean them. This cleaned panel is coated with a photosensitive film called the photoresist. The first film, then the coated panel to be followed by the second film. The pins in the printer were aligned with the holes in the phototools and panel. The printer uses powerful lamps that harden the photoresist. The unhardened resist will be removed. The copper pattern will be covered by the hardened resist.

There are also those nonessential coppers that are in need to remove with the help of a solution, the Alkaline. Checking the operation is a must if you want to have an exact figure. The cover of the image will be pulled out. What is left is the specific pattern.

The internal layer is expected to be finished. It has to be placed in an optical punch for the desired pattern to be registered. The holes will be punched but will need to go under surveillance. There will be no room for any miscalculation on the inner core for it is not possible to adjust them if they will be bonded with the other layers. The first data should be examined and try to match it with the data in the board.

The next thing to do are the external layers. These are constructed from a piece of cloth that has an epoxy in it and a foil made from copper. They will merge with the internal layer that will be located at their center. The expected outcome of this process is the copper foil being the outer layer of your PCS after several operations.

There should also be a X ray drill of the reference holes, preparation of the stack for drilling, workout on the holes and cut off those resin that exceeded. Disposition of the electroless copper, having an image your outer layers, the plating, to etch the outer layers, apply soldermask, electroplate the gold edge connectors, silk screen and the cure, some electrical tests, profiling and the final inspection should also be done.

We need electronic devices to make our work easier. Without the presence of the PCB, these will never function properly. This is how important its role is.

The necessary equipment is all you got to have to be able to create your own Printed Circuit Board. That just depends on you if you want to make a personal touch out of it, or better yet let some trusted establishments have it done for you. And if you are creative and patient enough but do not have any of the equipments, then it is pretty good to be making your own design through the web and have the manufacturers make it for you. Some accept this kind of arrangement today, custom PCB manufacturer could be one great example.




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