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Irregular smd pad shapes [message #170182] Fri, 31 March 2017 21:54 Go to next message
Brandon McMahan
Messages: 2
Registered: July 2016
Junior Member
Okay, I've been using Eagle for a while now, but I just encountered a new challenge.  I have this inductor.  It has an irregular pad footprint.  So...how do I make an irregular shaped (SMD) pad?
I know make my own "DIY Pad" by drawing a polygon on the top layer.  And I can make a second polygon on the tCream layer.  And I can make a third slightly larger polygon for the tStop layer.  But since this isn't a "recognized" pad, how do I make the connection between my symbol & package inside the device window?

Am I overthinking this?  Is there some obvious solution I am missing?
[Inductor]

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Re: Irregular smd pad shapes [message #170183 is a reply to message #170182] Fri, 31 March 2017 23:22 Go to previous message
warrenbrayshaw
Messages: 1750
Registered: January 2010
Location: New Zealand
Senior Member
On 1/04/2017 10:54 a.m., Brandon McMahan wrote:
> Okay, I've been using Eagle for a while now, but I just encountered a new challenge. I have this inductor. It has an irregular pad footprint. So...how do I make an irregular shaped (SMD) pad?
> I know make my own "DIY Pad" by drawing a polygon on the top layer. And I can make a second polygon on the tCream layer. And I can make a third slightly larger polygon for the tStop layer. But since this isn't a "recognized" pad, how do I make the connection between my symbol & package inside the device window?
>
> Am I overthinking this? Is there some obvious solution I am missing?
> [Inductor]


If you have version 6 or later
See "Help/Editor Commands/PAD|SMD/Arbitrary Pad Shapes"

It is similar to what you appear to have been doing. The library package
needs to contain an SMD or Pad which is the connection point for the
signal but the surrounding polygon or wire (all done in the package
editor) is permitted and you don't get DRC errors later. The tStop and
tCream still need to be created manually, in the package editor.

HTH
Warren



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