Those 45 degrees pads.. how is it done in Gerber?
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Posted by on July 30, 2007, 7:35 am
Please log in for more thread options Hello, I wrote my own PCB design software, which outputs Gerber and raster. One thing that puzzles me, when I see some PCB's (made by others) where the surface mount IC's are at a 45 degrees angle vs the rest is, how do they define those IC pads in Gerber? It can't be done with a traditional rectangular aperture flash (code D03, the one normally used to make pads) as far as I know, because those are either horizontal or vertical, so those 45 degrees pads must be done as traces (Gerber code D01), right? Thank you! Mike | |||||||||||||
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Posted by qrk on July 30, 2007, 1:06 pm
Please log in for more thread options On 30 Jul 2007 11:35:22 GMT, mike@ihatespammers.com wrote: The stuff coming out of Orcad Layout is done as a bunch of regular draws, not as a single aperture. | |||||||||||||
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Posted by Geo on July 30, 2007, 1:41 pm
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On 30 Jul 2007 11:35:22 GMT, mike@ihatespammers.com wrote: >I wrote my own PCB design software, which outputs Gerber and raster.
>One thing that puzzles me, when I see some PCB's (made by others) where >the surface mount IC's are at a 45 degrees angle vs the rest is, how do >they define those IC pads in Gerber? It can't be done with a traditional >rectangular aperture flash (code D03, the one normally used to make pads) >as far as I know, because those are either horizontal or vertical, so >those 45 degrees pads must be done as traces (Gerber code D01), right? Flash a Diamond (a square at 45 degrees) at each end then draw between them. Geo | |||||||||||||
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Posted by DJ Delorie on July 31, 2007, 4:27 pm
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In PCB, I draw them as polygon fills if they have square ends, or as traces if they have rounded ends. | |||||||||||||
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Posted by Guillaume on July 31, 2007, 4:38 pm
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mike@ihatespammers.com wrote: > Hello,
> I wrote my own PCB design software, which outputs Gerber and raster. > One thing that puzzles me, when I see some PCB's (made by others) where > the surface mount IC's are at a 45 degrees angle vs the rest is, how do > they define those IC pads in Gerber? Aperture macros. | |||||||||||||
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>Hello,
>I wrote my own PCB design software, which outputs Gerber and raster.
>One thing that puzzles me, when I see some PCB's (made by others) where
>the surface mount IC's are at a 45 degrees angle vs the rest is, how do
>they define those IC pads in Gerber? It can't be done with a traditional
>rectangular aperture flash (code D03, the one normally used to make pads)
>as far as I know, because those are either horizontal or vertical, so
>those 45 degrees pads must be done as traces (Gerber code D01), right?
>
>Thank you!
>Mike