Best Practices in PCB Design
The cloud is not an evanescent concept. There is a need for physical infrastructure, computers, and therefore printed circuits. Here are the best practices for designing high- performance components suitable for servers and other IT equipment.
Using a few simple techniques can help you design more robust circuit boards and save money. The design of printed circuit boards is a balance between functionality, longevity, aesthetics and costs of the board , design time and capacities of the manufacturers of printed circuit boards. With reference to Altium tools and techniques , here are the best practices for efficient PCB design.
Get the right grid
Find a grid spacing that fits as many components as possible and use it everywhere. While multiple grids may seem appealing , a little extra thinking in the early stages of layout can avoid spacing issues and maximize the use of the map. Many devices are available in different sizes, so use this to your advantage.
Keep the traces as short and direct as possible
This rule applies even if it involves going back to parts of the layout in order to optimize the track lengths. This especially applies to high speed analog and digital printed circuits where impedance and spurious effects will always play a role in limiting the performance of your system.
As a general rule, it is best to place the components only on the top side of the card . When placing components, make sure that the snap-in is enabled. Usually a value of 0.050 inch for the capture grid is best for this job. Start by placing all of the components that need to be in specific locations . This includes connectors, switches, LEDs, mounting holes, heat sinks, or anything else connected to an external location.
Think carefully when placing a component to minimize trace lengths. Place the pieces next to each other that connect to each other. Doing good work here will greatly facilitate the task. Organize the Keys in one or two orientations: up or down and to the right or left. Align each integrated circuit so that pin 1 is in the same place for each orientation, usually on the top or left sides. Position the polarized parts (i.e. the LEDs and the electrolytic caps) with the positive conductors all having the same orientation. Also use a square block to mark the positive leads of these components.
Checking your work
Once all traces have been placed, it is best to double check the routing of each signal to ensure that nothing is missing or not wired correctly. To do this, go through your diagram, one thread at a time . Carefully follow the path of each trace on the layout of your PC to verify that it is identical to that of your diagram.