Thanks for the math. It is a study I struggle with. The web site I talked about has a way of putting oz formula into the calculator I did not know about.
Example current 500mA, spec.trace width - inch, spec. length 4in. Answer comes out to 0.00878in trace width @ 500mA. That is what I was after. Best to you and thank you for clearing that up
from myself. Kevin
________________________________
From: John Anhalt <
janhalt@...>
To:
Homebrew_PCBs@yahoogroups.com Sent: Thursday, October 4, 2012 8:29 AM
Subject: Re: [Homebrew_PCBs] Re: Copper Clad Board Info
35 microns = 35x10^-3 mm
(35X10^-3mm) ÷ (25.4mm/in) = 1.38X10^-3 inch = 1.38 mil
John
----- Original Message -----
From: kbyrne10
To: Homebrew_PCBs@yahoogroups.com
Sent: Thursday, October 04, 2012 9:02 AM
Subject: [Homebrew_PCBs] Re: Copper Clad Board Info
Thanks for the help. Is there a good conversion calculator site available as I suffer thru math?
--- In Homebrew_PCBs@yahoogroups.com, Leon Heller <leon355@...> wrote:
>
> On 04/10/2012 11:54, kbyrne10 wrote:
> > I know of a trace calculator on a web site for determining width's of
> > traces but I need a question answered. If I buy stock PCB boards what is
> > the thickness of the copper itself? It asks for thickness like 1mil,
> > 2mil, 5mil, & 10mil. To be exact I need to figure this out. Thank you Kevin
>
> Copper thickness for most board material available to hobbyists is 1 oz
> per sq. ft. which equates to 35 microns.
>
> Leon
> --
> Leon Heller
> G1HSM
>
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