You should ask "Professor Tom" at PCBLibraries.com

You didn't say which calculators you are using,
but if one of them is his, I would go with that.

He is tied very closely with IPC, and after speaking
to him yesterday at IPC MidWest, he will be even
MORE involved in the future.
(I don''t know how to phrase the disclaimer that I
have no association with him or ulterior motive for
sending you to him, but I think his system will be
around for a long time. take it for what it's worth)

onward thru the fog,
Jack


.

On 9/27/07, Adam Smith <[log in to unmask]> wrote:
>
>
> Hi,
>
> I'm working on creating a new IPC-7351 compliant footprint library and I
> have been finding some conflicting information. I have been using two
> different footprint calculators and I discovered that the calculators name
> the same footprints differently with regards to height. For example; a
> capacitor with a height of 0.7mm is named "RESC4532X70N" by one calculator
> and named "RESC4532X07N" by the other. And a capacitor with a height of
> 1.5mm would be named "RESC4532X150N" by one calculator would be named
> "RESC4532X15N" by the other. Which one is correct? I can't seem to find it
> in the standard.
>
> Thanks,
> Adam
>
>
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