gEDA-user: Exposed copper -- still need to make a pad?

[Peter TB Brett]

On Thursday 27 September 2007 17:06:49 Randall Nortman wrote:
> On Thu, Sep 27, 2007 at 09:44:36AM -0600, John Doty wrote:
> > On Sep 27, 2007, at 9:28 AM, Randall Nortman wrote:
> > > I need to make an exposed area of copper (no soldermask), to act as a
> > > heat radiator.
> >
> > Why no soldermask? I'll bet its infrared emissivity is better than
> > copper's, making a better radiator. In space, the radiator tape we
> > use has a thin layer of teflon over the metal for this reason.
>
> As sayeth the datasheet, so do-eth the designer!  In fact, any exposed
> copper is going to be covered in shiny silver stuff (tin/lead/silver,
> depending on process) during board fab.

What, not gold?

                     Peter
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