[Oliver Mark]

Can anyone tell me for 1mm FR4 what the minimum permissible track width is and also the minimum gap between two tracks? I am using AWR design environment to design a PCB and would prefer to get this information before I start.

Assume a small sized PCB that has a burn boundary track

Thanks

[Leff]

Hi Oliver,
This is what we used if we design a pcb.

The minimum permissible track width :10 mil
the minimum gap between two tracks:12-15 mil ( 10mil is also acceptable)

Hope this could help you!

[Oliver Mark]

Hi

Please excuse my ignorance but what is :10 mils? is a mil one thousandth of an inch or millimeter?

Thanks

Mark

[Leff]

well, I also don't know the unit quite for sure, but I check in dictionary and got this:

mil: a unit of linear measurement equivalent to 0.0254 mm (one thousandth of an inch), often used in measuring the diameter of wires.

so that's _ a mil one thousandth of an inch

Hi

Please excuse my ignorance but what is :10 mils? is a mil one thousandth of an inch or millimeter?

Thanks

Mark

[Oliver Mark]

Cheers.

It's not like I'm trying to land a probe on Mars or anything but I'd rather not make that mistake. I have a student here with a pcb design that calls for a 0.20 mm gap I guess he'll have to do some more work on it.

Thanks again

[Leff]

haha,

but 0.2mm is also ok, it's not that strict.

[eWeeeb]

hi id say minimum of 25 mil.

[Leff]

hi id say minimum of 25 mil.

yeah, that's much more safe to avoid data interfere. But we usually take lesser.

[9efxa]

The minimum permissible track width :10 mil