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Unable to name polygon [message #169743] Sun, 26 February 2017 05:30 Go to next message
Karl Lautman
Messages: 89
Registered: February 2008
Member
I'm running Eagle 4.16r2. I've created a polygon on the top layer. It's the ground pad for the tab of a TO-263 package, so I want to name it GND to connect it to my GND signal, plus turn on related features like cream etc. When I click on the NAME button and then on the polygon, however, my system just beeps and won't let me name it (though it lets me name the pads for the pins). What am I doing wrong?
Re: Unable to name polygon [message #169744 is a reply to message #169743] Sun, 26 February 2017 05:34 Go to previous messageGo to next message
Karl Lautman
Messages: 89
Registered: February 2008
Member
In case it wasn't clear, this is happening in the part editor, so the polygon will be part of the part. I'm not doing it in the board layout.
Re: Unable to name polygon [message #169745 is a reply to message #169743] Sun, 26 February 2017 06:10 Go to previous messageGo to next message
warrenbrayshaw
Messages: 1750
Registered: January 2010
Location: New Zealand
Senior Member
On 26/02/2017 6:30 p.m., Karl Lautman wrote:
> I'm running Eagle 4.16r2. I've created a polygon on the top layer. It's
> the ground pad for the tab of a TO-263 package, so I want to name it GND to
> connect it to my GND signal, plus turn on related features like cream
> etc. When I click on the NAME button and then on the polygon, however,
> my system
> just beeps and won't let me name it (though it lets me name the pads for
> the pins). What am I doing wrong?


Hi Karl

it was not until after v4 that polygons over pads to make custom pads
arrived.

Why don't you just make a large SMD pad for that tab pad.
The Linear library has a TO-263 package 3 pin you could use or adapt.

HTH
Warren



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Re: Unable to name polygon [message #169755 is a reply to message #169745] Sun, 26 February 2017 17:20 Go to previous message
Karl Lautman
Messages: 89
Registered: February 2008
Member
Thanks for the tips, Warren. I thought of making a big pad, but I was trying to adhere to the datasheet which specifies a T shaped pad; a rectangular one would be ... imperfect. Wink As for the Linear library, had I known there was a TO-263 package in there I would have used it. Now I need to decide whether it's easier to plug that one into my design or just add a big rectangular pad to it.

Karl
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