Re: gEDA-user: How's my footprint?

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

As a second thought, where do you want the center of your foot print to
be? I tend to make my cneters be the center of what ver is the first pad.

This is an issue that we need to address as board shops that have the
ability to do point to point probing are asking for files that define
the locations of each pad.

Steve M.

Steve Meier wrote:
> Ben,
>
> I don't see anything inherently wrong. But it is probably a little
> dated. Were you using my doc?
>
> For today's  capabilities I would suggest that instead of working in
> units of mills you work in units of 0.01 mills.
>
> I won't or don't have time to check it for correctness otherwise. But
> you seem to be on the right tract.
>
> Steve Meier
>
> Ben Jackson wrote:
>   
>> I created this for LT1764A and friends, it's a DD5.  This is exactly their
>> recommended footprint, plus an outline I made up.  It's very tight to the
>> part, more so than some I looked at on professionally made boards using
>> the same package.
>>
>> I did test-fit the part on a 1:1 printout.
>>
>> I initially set the mask and clearance manually, but then I took them out
>> and accepted the default, since I have no experience tuning those.
>>
>> # author: Ben Jackson
>> # email: ben@xxxxxxx
>> # dist-license: GPL 2
>> # use-license: unlimited
>> # reference: http://www.linear.com/designtools/packaging/ddpak/Q_DD5.pdf
>> Element(0x0 "5-Lead Plastic DD Pak" "U1" "" -20 -650 0 100 0x0)
>> (
>> 	Pad(-134 -21 -134 -69 42 "1" "1" 0x0100)
>> 	Pad(-67 -21 -67 -69 42 "2" "2" 0x0100)
>> 	Pad(0 -21 0 -69 42 "3" "3" 0x0100)
>> 	Pad(67 -21 67 -69 42 "4" "4" 0x0100)
>> 	Pad(134 -21 134 -69 42 "5" "5" 0x0100)
>> 	Pad(-35 -390 35 -390 350 "tab" "6" 0x0100)
>> 	ElementLine(-230 -195 -230 -585 10)
>> 	ElementLine(230 -195 230 -585 10)
>> 	ElementLine(-230 -585 230 -585 10)
>> 	ElementLine(-230 -195 230 -195 10)
>> )
>>
>>   
>>     
>
>
>
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>   



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