Re: gEDA-user: size of 0402 footprint

[Dylan Smith <dyls@xxxxxxxxxx>]

On Mon, 14 Jul 2008, Dan McMahill wrote:

> You might get some amusement (or you may be disgusted) from this:
>
> http://www.pcblibraries.com/Forum/forum_posts.asp?TID=1719

I'm flabbergasted.

Why couldn't they accept metric units? Surely engineering even in the USA
uses metric units, and did so by the 1980s?

Instead, I've got a mish mash of metric and imperial stuff on my most
recent PCB, three metric dimensioned ICs (a 0.5mm pitched TQFP and TSSOP,
and a 0.4mm pitched LQFP), two imperial dimensioned ICs (SOIC and SOJ) and
then all the discretes, of course, imperial footprints (0603, SOT-23 etc.)
The most critical one to get right is that fiddly LQFP so the board was
done on a metric grid.



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