Contents
Why do power traces have more current than ground traces?
Both power and ground traces will have more current flowing through them, and if you don’t make them wider than average, you’ll get a ton of heat trying to flow through those skinny spaces, which can end up burning wires and ruining your board. Check out this Arduino Mega 2560 reference design.
Why is it important to keep traces away from mounting holes?
Keep traces and components away from mounting holes to avoid shock hazards. Having a common ground on your PCB is imperative as it gives all of your traces the same reference point for measuring voltage. This comes in handy if you’re working with an analog circuit as your first design.
What happens when electricity is cruising through copper traces?
When you have electricity cruising through all of your copper traces, it’s going to produce some serious heat, and this is always a concern with electronics.
What should I know before laying down copper trace?
Before you start laying down a copper trace, first take the time to give your manufacturer a call or shoot them an email to see if they have any specific requirements on minimum trace widths, trace spacing, and the number of layers they can handle on a board (for the right price) Why?
How big should a trace width be for low power?
For low power signal traces it is generally advised to keep traces small to increase the available space available for routing. Excessively large traces consume valuable PCB space while offering highly diminished returns. 6 to 30 mils is typical for most signal trace widths.
How is the width of a trace determined?
Determining the width of a trace based on the current demands is important for most power traces and high power signals, however, most traces on PCBs pass signals which draw negligible current. For these low power signal traces, we must look at other characteristics of the PCB to determine the width.