[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: gEDA-user: Cutouts

You are a little shy of providing info. It is an STX-35398A part and is a very odd critter. But I understand it now. The drawing you provided has inaccuracies in it. They appear to show the cutout pushing to the rectangular pins. In believe in reality they only require a single rectangular cutout from the edge of the board, 6.3 mm wide. They don't indicate how deep this needs to be, but you can figure that out for yourself. The rectangular pins seem to be inserted into oblong holes and pads. The hole is 0.5 mm wide (~20 mil) and so might not be routed without difficulty. You need to ask your fab house if they can do that. As to drawing the artwork in PCB, I can't help you with that. In FreePCB this would not be at all hard. The outline is supported as its own layer and can include cutouts, angled sides and even curved edges. The oblong pads could be created by specifying a rounded rectangle with corner radii equal to half the short side. I'm not sure how the oblong holes would be specified since they can't be drilled. I expect routed holes would need to be added to the outline layer.
One thing I'd like to clarify. You talk about this jack that "mounts in the middle of the circuit board". Rather than mounting in the middle of the board in an X/Y direction sense, I now realize you are saying it mounts in a hole in the board rather than on top of the board. This part by necessity has to mount on an edge of the board and not in the center. Right? If you put it in the center of the board, there is no way to put the plug in. 

Rick


At 08:23 PM 9/29/2010, you wrote:
Yes it's supposed to mount there. I need to know how to make the cutout for it to sit in place. I can get you a link for the PDF. As I said I'm confined for space. It's a kycon stx-35398... 


On Sep 29, 2010, at 7:57 PM, timecop <timecop@xxxxxxxxx> wrote:

> I was going to reply something about "why are you linking to some
> stupid flash website with a jpeg on it instead of .pdf off
> manufacturer's website" but then I thought audio jacks are serious
> business and he's probably not allowed to disclose any more
> information than this under a NDA.
>
> -tc
>
> On Thu, Sep 30, 2010 at 8:51 AM, Rick Collins <gnuarm.2006@xxxxxxxxx> wrote: 
>> I'm not sure what to make of this part.  If this is the only info you have
>> on this part, I wouldn't use it until I get one in hand.  It looks to me
>> like this is intended for the body of the part to sit in the plane of the
>> board with pins along the edges.  Notice the drawing shows the edge of the
>> PCB being cut back for the part. The three pins have two outlines, an inner >> and an outer one (I've got no idea what that means). The two rectangles at 
>> the top look like surface mount tabs to me.  That is a very strange way to
>> mount a part, especially in the center of the board. Is that what you see? 
>>
>> I think this drawing can only be properly interpreted if you have a clear
>> idea of what the part looks like.
>>
>> Rick
>>
>>
>> At 07:28 PM 9/29/2010, you wrote:
>>
>>> http://www.box.net/shared/3axnnkflhe
>>> That is the link. I'm not too worried about cost. I'm really wondering how 
>>> to create the footprint that has the cutout in it.
>>>
>>> On Sep 29, 2010, at 7:13 PM, Rick Collins <gnuarm.2006@xxxxxxxxx> wrote:
>>>
>>>> What link?
>>>>
>>>> In general, rectangular openings are not well received by the PWB maker.
>>>> If they are large enough (somewhere in the range of 0.1 or 0.2 inches wide 
>>>> or more) they can be routed, but that often costs a bit more.  A small
>>>> rectangular pin is typically accommodated by notching the edge of the board, 
>>>> but if you want it in the middle, that would be a long notch.
>>>>
>>>> Oh, wait, you mean electrical connection pins!  I was thinking of an
>>>> alignment pin. I had this exact problem and I just used round holes large 
>>>> enough to push the pins through.  In fact, I fudged the sizes a bit so I
>>>> didn't have lots of different drills. My power connector (may be similar to 
>>>> yours) used five rectangular electrical pins and one alignment pin.  The
>>>> round holes seemed to work just fine. CUI jack barrel 5.5x2.1 mm PJ-051AH 
>>>>
>>>> Is this what you are talking about?
>>>>
>>>> Rick
>>>>
>>>>
>>>> At 06:44 PM 9/29/2010, you wrote:
>>>>> Hi,
>>>>> im designing something using a 3.5mm audio jack that is space confined,
>>>>> i
>>>>> need to use a jack that mounts in the middle of the circuit board.
>>>>> unfortunatly i cant figure out how to make the cutout in the footprint
>>>>> or
>>>>> the rectangular(with circular ends) pins. the link is a picture of the
>>>>> footprint.
>>>>> thanks, dave
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> geda-user mailing list
>>>>> geda-user@xxxxxxxxxxxxxx
>>>>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> geda-user mailing list
>>>> geda-user@xxxxxxxxxxxxxx
>>>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>>>
>>>
>>> _______________________________________________
>>> geda-user mailing list
>>> geda-user@xxxxxxxxxxxxxx
>>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>>
>>
>>
>> _______________________________________________
>> geda-user mailing list
>> geda-user@xxxxxxxxxxxxxx
>> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
>>
>
>
> _______________________________________________
> geda-user mailing list
> geda-user@xxxxxxxxxxxxxx
> http://www.seul.org/cgi-bin/mailman/listinfo/geda-user


_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user




_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user