Homebrew PCBs

I would not run 500ma through a 8/1000 trace. It will not handle it for long.

Boots-2b1

Sent from my iPhone

On Oct 4, 2012, at 7:37 AM, Kevin Byrne <kbyrne10@...> wrote:

> 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
> >
> 
> [Non-text portions of this message have been removed]
> 
> [Non-text portions of this message have been removed]
> 
> 


[Non-text portions of this message have been removed]