kicad-lib-committers team mailing list archive

[Carl Poirier <carl.poirier.2@xxxxxxxxx>]

Because that's what IPC-7351B says about can components. I don't think they
include the THT cans in this standard, but Lorenzo can confirm that one.
(Or anyone else with access to the documents)

On Thu, Jan 15, 2015 at 4:32 PM, nnn <nnn4000@xxxxx> wrote:

>  I don't understand the exception for aluminum capacitors. Does it apply
> to both THT and SMD? Why clearance for THT capacitors should be greater
> than clearance for other THT?
>
> W dniu 15.01.2015 o 03:04, Carl Poirier pisze:
>
>  It's pretty simple. They are proposing a nominal courtyard excess of
> 0.25mm for all THT components. All in all, I would amend rule 6.6 to the
> following, breaking it down into two rules:
>
>  - Courtyard line has a width 0.05mm. This line is placed so that its
> clearance is measured from its center to the edges of pads and body.
> - Courtyard clearance is 0.25mm, except for components smaller than 0603
> at 0.15mm, aluminum capacitors and connectors at 0.5mm and BGA at 1.0mm,
> all rounded on a grid of 0.05mm. (IPC-7251, IPC-7351)
>
>  The connector clearance comes from *PCB Design Optimization starts in
> the CAD library*. Any comments before I edit the KLC?
>
> On Wed, Jan 14, 2015 at 8:22 PM, Carl Poirier <carl.poirier.2@xxxxxxxxx>
> wrote:
>
>> Thank you very much Lorenzo. I will come up with some adjustments to the
>> KLC.
>>
>> On Tue, Jan 13, 2015 at 2:26 AM, Lorenzo Marcantonio <
>> l.marcantonio@xxxxxxxxxxxx> wrote:
>>
>>> On Mon, Jan 12, 2015 at 09:39:44PM -0500, Jean-Paul Louis wrote:
>>> > > Thanks for the information. I have looked at some videos. Are you
>>> aware of some guidelines for THT courtyards?
>>>
>>> Here you go for THT:
>>>
>>> http://www.ipc.org/committee/drafts/1-13_d_7251WD1.pdf
>>> (yes, eternal draft:D)
>>>
>>> --
>>> Lorenzo Marcantonio
>>> Logos Srl
>>>
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>>
>>
>
>
>
>
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