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Leaded Horizontal TO-220 Pad Association

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caclark View Drop Down
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Joined: 24 Oct 2012
Location: Cincinnati, OH
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    Posted: 20 Mar 2013 at 11:46am
I am currently trying to build a TO-220 leaded transistor in PCB Libraries. All goes fine with the creation within the tool graphically, but when I import it into my PADS library (ver 9.3.1 if relevant) the 4 th pin does not have the large thermal pad associated to the hole (see image).

I also noticed that graphically the large pad shows as expected (see image).
However if I open the padstack viewer only the underlying hole is displayed there as well.

And as for the version I am on 2012.47

In any case I will add them directly to this post anyway.






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rdl86626 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rdl86626 Quote  Post ReplyReply Direct Link To This Post Posted: 08 May 2013 at 12:17pm

I was also building a TO-220FP footprint, horizontal. I put the numbers in, saved it to my library, clicked on it again and it turns vertical with all the wrong dimensions, h was 16.4 now says it is 3.6.

 
I output it to OrCAD PCB Editor and it comes out ok. Also I don't understand what the b dimension is. Is it the thickness of the terminal?
 
I am using 0.51 version.
 
A little confused.
Rick
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