The
calculator seems to work well, but I had some problems with the links on the pcd
mag page. (notified their webmaster).
Our
typical design uses 4 oz. boards for all of our "heavy duty" boards. It
used to be 6 oz. but we had too many vendor quality problems or no bids on
orders. On these boards we usually design the board by removing as little
copper as possible (right or wrong).
Phil
Nutting
There is a calculator application available
here:
http://www.ultracad.com/calc.htm
Scroll down to
Wiregage.exe.
Also see: http://www.pcdmag.com/resources/equations/
-Denis
At
11:38 AM 1/4/2002 -0600, you wrote:
In the August 1997 issue of
Printed Circuit Design there was a Designer's
Viewpoint column that had a
conversion chart for finished trace widths to
standard wire gauges.
It has copper weights of 1/2, 1, and 2oz related to
AWG ratings ranging
from #39 down to #10. For instance, to get the
equivalent of AWG
#10 in a 2oz non plated trace, it must be 0.472429" wide,
for a plated
trace, 0.344745". It also gives the resistance/inch for 20, 50
and
75 degrees celcius.
It doesn't give current carrying capability, but you
can usually get current
ratings of AWG wires. Do you have to do 80A
all in one trace? Can you run
some wires in parallel with the trace
on the board?
-----Original Message-----
From: Shannon Stutzman
[mailto:[log in to unmask]]
Sent: January 4, 2002
11:01 AM
To: [log in to unmask]
Subject: [TN] Copper
Hello
everyone;
I am looking for a chart or an equation that will allow me
to find the
copper thickness needed in relation to current. I have
the chart that is
given by IPC but this chart dose not give current
ranges or copper
thicknesses high enough for my application. I need
to how thick of copper
to use for 80 amps and what the minimum trace
width that can be used. If
any of you have any information on this
I would appreciate it.
Thank
you.
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847-509-9700
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