kicad-developers team mailing list archive

[Wayne Stambaugh <stambaughw@xxxxxxxxxxx>]

On 8/13/2014 11:21 AM, Dick Hollenbeck wrote:
> On 08/13/2014 10:07 AM, Wayne Stambaugh wrote:
>> On 8/11/2014 10:24 PM, Dick Hollenbeck wrote:
>>> We got any of these in our part or footprint libraries?
>>>
>>> http://www.johansondielectrics.com/technical-notes/x2y-application-notes/x2y-power-bypass-pcb-mounting.html#.U-l5WtZGlO4
>>>
>>>
>>
>> I haven't seen any footprint like what is shown.  I've done similar
>> footprints for handling multiple wire sizes although all of the
>> connected pads are round and through hole so it should be doable
>> although I've never tried mixing SMT and through hole pads to create a
>> complex pad.  Thanks for the link.  There is a lot of good information
>> there.  
> 
> 
>> Although, I doubt I will ever have to worry about a couple of pF
>> of bypass inductance in any of my designs.
> 
> 
> Mr. Henry would be insulted.  :)

Oops!  I meant pH.  My sincerest apologies to Mr. Henry.

> 
> 
> There were all kinds of papers on them in 2006.  It seems to be an example of the patent
> system actually working like it was intended.  With the x2y caps, if they can claim lower
> BOM cost, and higher performance, that is a win in my book.
> 
> An Altera reference design has them in there.  That means if I stray from their
> recommendation, and the board does not work, I'm toast.
> 
> Seems I will need to make the parts and the footprints.  Veecandoodat.
>