kicad-lib-committers team mailing list archive

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

Lorenzo, John or Jean-Paul, can you please check which cans are included in
IPC-7351B?

On Thu, Jan 15, 2015 at 4:44 PM, Carl Poirier <carl.poirier.2@xxxxxxxxx>
wrote:

> 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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>>
>