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Re: KLC - courtyard

 

On Fri, 2015-01-09 at 17:54 +0100, nnn wrote:
> There is no information about courtyard line width in kicad library 
> convention.
> Can it be 0.05 mm as suggested in:
> http://www.pcblibraries.com/downloads/temp/PCB_Design_Optimization_Starts_in_the_CAD_Library_8685831.pdf
> ? I used 0.05 eg in Housings_SSOP, so you can check if it looks ok.

Sounds very sensible to me. Since the guy who wrote that is also one of
the people on the committee that approved IPC-7351, this is presumably
consistent with that standard.

> Can overlaping courtyard with silkscreen be allowed? It may look bad, 
> but it's not specified in rule 6.6.

As the "IPC" way now is to draw the main silk screen lines at the
maximum material position for alignment verification purposes, and the
courtyard by definition is outside that, I think it would make sense to
at least say that all silk should be contained within the courtyard?
Otherwise it could be obscured by other components. If the silk extends
up to or outside the courtyard, that may indicate that the courtyard is
too tight.

Cheers,

John





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