Sunday, 21 June 2015

layout - Standard PCB trace widths?


Is there a standard for the sizes of PCB traces?


That is are some 25 mil and others 10 mil or is can you choose your own?


I plan to run 400mA through some thicker traces, but less than 30mA for all other traces. About what size would I need?



Answer



Your traces can be any size you want as long as you stay within the minimum feature size and spacing that your PCB fab supports for your particular price point.


These will cover basic needs, the trace width one is a best fit calculation to the chart Engen posted:


PCB Trace Width Calculator



PCB Via Calculator


Neither of those cover controlled impedance calculations, if you need those look elsewhere.


No comments:

Post a Comment

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...