In the world of modern electronics, the printed circuit board acts as the vertebrae. Any device involved in some form of computation, even if it is as simple a device as a digital clock, will have a printed circuit board. They are involved in the routing of electrical signals via electronics and meet the mechanical and electrical circuit requirements. In brief, this electronic circuit infuses life into the electronics and dictates the direction towards which electricity should go.
Before the commencement of design, it is a sensible approach for circuit designers to drop in at the board shop. They should have a person to person communication with fabricators regarding their manufacturing demands in detail. This will greatly cut down on the transmission of errors at the design phase. However, this is not a practical solution, especially when more and more companies have started outsourcing their manufacturing questions to suppliers stationed abroad. In this context, a write-up with a clear view of this account will help better understand the manufacturing steps. Learn about reliable PCB assembly services suppliers through GreatPCB.
- Design layout
Contact prominent PCB assembly services suppliers for meeting your orders at cost-effective rates. The first step is the design. The manufacturing process begins with a specific scheme. It is the designer who lays down the blueprint of the electronic board following the outlined requirements. After feeding the design layout in the frequently used programs, the various aspects are checked to ensure that they are error-free. The completed design is then handed over to a fabricator. Design for manufacture check takes place over here. The objective of this check by the fabricator is to ensure the manufacturability of the design.
- Filming phase
The manufacturers make use of plotters for making photo films. Plotters are special laser printers that are utilized for imaging the electronic circuits. Of late, due to a giant leap in technological advancement, this filming process is becoming outdated. It is gradually being replaced with laser direct imaging techniques. In the traditional method, a photo tool and ultraviolet light are used to transfer images. In the modern system, the panels have a photoresist coating, and the preloading of the CAM files takes place into the laser. You will get a digital printout of the circuit pattern on the board. Registration holes are made to ensure alignment of the films.
- Getting rid of excess copper
In the manufacturing process, cleanliness is given topmost priority. Care is taken to ensure that no dust particles accumulate on the laminate. Ultraviolet light is passed on the necessary parts of the film. In the process, the board traces are hardened on the photoresist. The unhardened part is removed. Excess copper is eliminated through acidic etchant.
- Alignment of layers
The next phase is optical inspection. The inner and outer layers are aligned with the previous holes. The technician uses an optical punch machine for the alignment of the layers. Another machine performs an optical inspection to make sure that no defects are present.
- Laminating aspect
As soon as defect-free layers are ready, they are joined together. Fiberglass pieces are soaked in epoxy resin. The outer wall is made up of these pieces. Metal clamps are used for the pressing of these layers. The technician performs the operations on a press table. The laminating process involves the application of heat as well as pressure. A computer-guided drill is used for making the holes. The plating process involves the use of copper for fusing the various layers. The outside layer is then subjected to etching for the last time, and now it is ready for solder masking. In the finishing process, gold and silver plating is done.
It would be best to get in touch with a leading printed circuit board manufacturer after well-done research on the net.