Contents
Where do you put vias?
Vias should be placed strategically to allow for routing in different directions as well as turning large busses of traces. Vias on a grid that are aligned with placed components will offer more routing channels than vias placed at random.
How do vias work?
Firstly, the vias are laser drilled, plated, and planarized to form an interconnection from the outermost layer to the next layer below it. When those steps are complete, another layer is laminated onto the outside of the stack. After lamination, the new layer undergoes another cycle of blind drilling and plating.
What are the rules for placing components?
Tips For Effective Component Placement Layout In PCB Design
- Group Components By Function.
- Keep Components Away From Heat Dissipating Area.
- Place Board-To-Wire Connectors Near The Edge.
- Get The Components Orientation Standardized.
- Make Space For Copper Traces.
How to use via stitching and via shielding?
Use the Via Stitching and Via Shielding commands to stitch copper on different layers, and to add a wall of shielding vias adjacent to a route path (hover to highlight shielding vias). Let’s look at stitching vias first, and then shielding vias. Via stitching is run as a post-process, filling free areas of copper with stitching vias.
How to add via stitching to a PCB?
For via stitching to be possible, there must be overlapping regions of copper that are attached to the specified net, on different layers. Supported regions of copper include Fills, Polygons and Power Planes. Select the Tools » Via Stitching/Shielding » Add Stitching to Net command from the menus to add stitching vias to a specific net.
How is via stitching used in RF design?
Via stitching can also be used to tie areas of copper that might otherwise be isolated from their net to that net. Via shielding has a different function, in RF designs it is used to help reduce crosstalk and electromagnetic interference in a route that is carrying an RF signal.
How is via stitching used in copper wiring?
Via stitching is a technique used to tie together larger copper areas on different layers, in effect creating a strong vertical connection through the board structure, helping maintain a low impedance and short return loops. Via stitching can also be used to tie areas of copper that might otherwise be isolated from their net to that net.