PCB fabrication for multiple layered Printed Circuit Boards is managed with the objective of providing an extra degree of freedom when it comes to selecting complicated or noise sensitive electronic circuits. The process includes the stacking of circuits on one another to establish predetermined interconnections amongst them, with the help of reliable and techniques used for this purpose.
It is even possible to manage PCB fabrication at home and the benefit of making one at home is that you can solve problems related to complex circuits. The method of PCB fabrication at home is as follows:
In the first stage the magazine schematic is transferred to the layout programs schematic. This is followed by utilizing the PCB layout program to place the parts on the board as well as to manage the routing of computer traces. After completion of some parts, clearance of rats nets begins. After the layout is done, a laser printer manages the printing of the board layers on a special toner transfer paper. The process of transferring the board image on the bare copper board is done with the help of a laminating machine or an iron that is used for hot cloth ironing.
Then the board is kept under water so that the paper that has stuck to it can be removed and the toner is left behind. For the etching activity, an aquarium is used. Two aquarium pumps move over the copper boards and the job of the two aquarium heaters is to maintain the temperatures at 110 F. Depending upon the copper thickness as well as the quality of the solution, this activity can be managed in around 30 minutes on the higher side.
Once the etching work is completed, a solvent is utilized for removing the toner .This is followed by the tinning process using a soldering iron and a small tinned solder wick piece. Though, tinning is not mandatory, it is advisable because it enhances the appearance of the board and also prevents the oxidation process of copper until the process of soldering parts of board is done.
Then, the drilling of holes for leaded components and mounting holes is carried out. Finally, the board is completely read to be populated.
The PCB fabrication process can be successfully carried out if each and every step is carefully executed and the quality of the material used in the fabrication is good. So, if you are planning to create a durable PCB then it is important to keep high quality standards.
Remember to use a good quality etchant system-some of the popular brands are- FeCI3, Chromic acid, cupric chloride etc.
