Budda
Newbie level 5
Traces and Via's
well up until recently i had only designed a couple of simple boards at uni, these were really just a matter of playing dot to dot joining connections together.
Now im looking at designing a "high speed board" and have been reading about trace impedance and a milliion other things.
So i understand that when you design high speed pcbs you use say a 50ohm impedance by a hieght width calculation, but does it matter what width your traces are compared to frequency? I have seen some boards with traces that are 4mil and others seem to have traces 16mil or more is this just a matter of preference and board size??
And my other question is what determines the size of the via you use? is it just whatever fits on the track and doesnt take up to much room?? there doesnt seem to be much information on this topic.
Kevin
well up until recently i had only designed a couple of simple boards at uni, these were really just a matter of playing dot to dot joining connections together.
Now im looking at designing a "high speed board" and have been reading about trace impedance and a milliion other things.
So i understand that when you design high speed pcbs you use say a 50ohm impedance by a hieght width calculation, but does it matter what width your traces are compared to frequency? I have seen some boards with traces that are 4mil and others seem to have traces 16mil or more is this just a matter of preference and board size??
And my other question is what determines the size of the via you use? is it just whatever fits on the track and doesnt take up to much room?? there doesnt seem to be much information on this topic.
Kevin