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From: | |
Reply To: | DesignerCouncil E-Mail Forum. |
Date: | Mon, 13 Apr 1998 13:43:00 -0700 |
Content-Type: | text/plain |
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If you have a choice, make the space wider.
All other things being equal,the etching process capability increases in
direct
relation to the spacing.
If your supplier adds cost at 8/8, they need all the help they can get.
Steve Joy
[log in to unmask] wrote:
(excerpted)....
And also, today's dumb question:
I know that spacing between traces is governed by voltage and the
width is governed by current load and temperature rise above ambient.
If I use a 12 mil wide trace, can I still maintain an 8 mil wide
space to the next trace? Assume it meets the spacing for that
voltage. Or is the spacing always at least track width?
********my reply....
I believe that the width of trace and width of 'airgap' are independent of
each
other. The 'airgap' should solely rely on the voltage potential between two
traces. I would guess that it is just a convenience for the PCB vendor to
have
both specs the same.
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