Contents
What should be the distance between PCB traces?
A minimum distance should be maintained between traces to minimize the crosstalk. The crosstalk level depends on the length and the distance between the two traces. In some areas, the routing of traces reaches a bottleneck where the traces are closer than desired.
Can a double sided PCB be used for routing?
Designing a double-sided PCB becomes complex when the ground plane gets shared between the top and bottom layers. The designer should ensure that there is at least a full ground plane under the most critical section. The top side must be used for routing as much as possible with a few traces on the bottom side.
Are there rules for spacing between layers of PCB?
PCB clearance rules for spacing between traces on the same layer are what most designers are accustomed to. However, PCB clearance between layers is an often-overlooked factor in design.
Can you have high voltage and low voltage traces on the same PCB?
The best way to prevent high-voltage signal traces coming too close to low-voltage signals is to not have them on the same PCB. However, that proves to be an impossible option for some as modern products are getting more and more compact. Unlike trace separation on the same layer, your options are quite limited.
What should the crosstalk level be on a PCB?
The crosstalk level depends on the length and the distance between the two traces. In some areas, the routing of traces reaches a bottleneck where the traces are closer than desired. In such situations, the distance between the signals outside the bottleneck should be increased.
What’s the best route for a high speed PCB?
Keep 135⁰ trace bends instead of 90⁰ while routing high-speed signals. The bends should be kept minimum while routing high-speed signals. If the bends are required, then 135° bends should be implemented instead of 90°as shown in figure (5, Right side). At 90 degrees, smooth PCB etching is not guaranteed.