Printed Circuit Board, or PCB, is layered insulator made from electrical conductors. Its designing is one aspect that requires reasonable knowledge and expertise; it can be a time-consuming and frustrating process. With right resources that provide details about the materials to be used, and the right technique required to treat the conductors, however, a good PCB design can be created.
The overall PCB design process takes place through a series of systematic steps. However there are three main aspects to a PCB design: schematic capture, PCB footprints, and PCB layout. We first discuss how the overall design process works.
Steps to Designing a PCB
1 Conceptualize the Design- choosing a circuit design is the first step before the actual designing begins. Though a manual process earlier, the schematic of a PCB is now captured electronically.
2 Choose the PCB Designing Software- the software is all-important tool in PCB designing; the complexity of the software can vary depending on the circuit.
3 Schematic Capture- this process in basic terms captures circuit schematic electronically. It is a process that connects and tests the various components of the circuit. The backbone of any circuit designing process, it can be done reliably with the help of schematic capture software- from expensive, industry grade software like OrCAD Capture to economical software like Protel.
The software for schematic capture offers other advantage- tools such as OrCAD Pspice allow users to actually create a simulation of the final circuit design.
1 Designing Footprint of Circuit Components- drawing an outline of different components that actually get placed on the circuit base.
2 PCB Outline- this step allows gauging the overall component numbers and area to be used on the circuit board. Serves as a checkpoint before the actual designing process begins.
3 Set up Design Checklist- before placing the various components, it helps to set a rule list of the procedure.
4 Component Placement- this step involves the physical placement of various components on the circuit board, and making them fit together.
5 Manual Route Tracing- the power and other parameters need to be manually traced to ensure the workability of the circuit.
6 Implementing Auto Router- some traces are too tedious to do manually; for these, there are auto tracers that do the job and save days of manual labour.
7 Design Rule Checker- most design software packages have the provision to check designs. There can be manual errors during PCB spacing which get rectified using the checker.
8 Output Gerber Files- once the circuit board is complete in all respects, and verified to be error-free, the last step in
pcb design process is to output the gerber files. These files are universally uniform and essential components in the creation of circuit designs.
Thus, with the correct protocol and the right software to design a PCB, an error-free, workable circuit is easy to create. In addition, there are many PCB design services that offer their expertise in the matter of PCB designing projects.
