Ajab said:
What is the ideal trace width for 2A current...on a Non Impedance
controlled board?
I tried calculating it ..but the values are different...
Can anyone tell me regarding this?
There is no "Ideal". There is "good enough", or preferably, "Good enough
plus some margin for error." More is approximately always better, since
you don't care about capacitance.
How much room have you got? How wide can you make it?
If you can cram in a 3/8" (centimeter) wide trace, do so. If you have to
narrow the ends down to make things fit, do that. If your PCB program
can't manage that, use one that can. If you are tightly space
constrained, the question becomes more along the lines of "what's the
bare minimum I can get away with?" Then you can work up from that if you
can make the space. Here a a couple of guesstimators for that:
http://www.circuitboards.com/capacity.php3
http://circuitcalculator.com/wordpress/2006/01/31/pcb-trace-width-calcula
tor/