[PCB_FORUM] Re: Heatsink Pad

 
Those are for the new DFA checking...
 
 
-- 
George Patrick
Tektronix, Inc.
Central Engineering, Engineering Design Services
P.O. Box 500, M/S 39-512
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http://www.pcb-designer.com

It's my opinion, not Tektronix' 

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of David Greig
Sent: Wednesday, December 14, 2005 11:57
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad


Hey, just noticed some new subclasses' in 15.5.0
 

Package_geo/dfa_bound_top

Package_geo/daf_bound_bottom
Package_geo/pastemask_top
Package_geo/pastemask_bottom
 
Presumably to address an issue?
 
Best Regards
 
David Greig
______________________________

GigaDyne Ltd
Buchan House
Carnegie Campus
Dunfermline KY11 8PL
United Kingdom
t: +44 (0)1383 624 975
www.gigadyne.co.uk <http://www.gigadyne.co.uk/> 
______________________________
 

  _____  

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Musetti, Carl
Sent: 14 December 2005 19:47
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad


does anyone know if it is fixed in 15.5.1

-----Original Message-----
From: Dave Elder [mailto:dave.elder@xxxxxxxxxx]
Sent: Wednesday, December 14, 2005 2:45 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad


I have raised a PCR and am hoping that Uncle Ed will get Allegro to do
just that!

Dave Seymour wrote: 

arrrgh. Why can't Allegro just map on the way in.

Venting done.



Dave Elder wrote:


Unless you are using 15.5 do not use PACKAGE GEOMETRY/PASTEMASK_TOP as
the user-defined layer name.
In 15.5 this is a system-defined layer and you will get a nasty conflict
if you already have a user-defined layer of this name in your designs or
on symbols when you come to uprev your designs or use 15.x created
symbols in 15.5.

Cheers, Dave



Gerry Meier wrote:


While in symbol - Add polygon  on Package Geometry > Pastemask_top then
Include this layer in your film control file
 
Gerry Meier
Sr. PCB Designer
Freedom CAD Services, Inc.
Voice: (603) 864-1300 x1350
AL Voice: (256) 417-6944
Email: gerry.meier@xxxxxxxxxxxxxx
visit our website at<http://www.freedomcad.com
 

  _____  

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Ed Caldwell
Sent: Wednesday, December 14, 2005 10:09 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad



Hi Gerry, 

That is the track I was originally on but I didn't see how to add the
paste pad. 

Ed 




"Gerry Meier" <gerry.meier@xxxxxxxxxxxxxx> 
Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx 


12/14/2005 11:03 AM 


Please respond to
icu-pcb-forum@xxxxxxxxxxxxx



To
<icu-pcb-forum@xxxxxxxxxxxxx>, "Milostnik Matija ITWEH7"
<milostnik@xxxxxxxxxxx>         

cc

        

Subject
[PCB_FORUM] Re: Heatsink Pad    


        
        




Ed, 
  
  
You can just add the shape to the symbol on etch > top. When you import
the part into you're board file assign the shape to whatever net you
want and drop in some vias. You can include the soldrmask and pastemask
in the symbol. 
  
This does not require a ninth pin to be added to the logic symbol. 
  
  
Gerry Meier 
Sr. PCB Designer 
Freedom CAD Services, Inc. 
Voice: (603) 864-1300 x1350 
AL Voice: (256) 417-6944 
Email:  <mailto:gerry.meier@xxxxxxxxxxxxxx> gerry.meier@xxxxxxxxxxxxxx 
visit our website at<http://www.freedomcad.com 
  


  _____  

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Ed Caldwell
Sent: Wednesday, December 14, 2005 9:52 AM
To: Milostnik Matija ITWEH7
Cc: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad


Sorry - didn't mean to seem unfriendly 

First, I generated the unique pad shape with the Allegro editor... 

Start new 
enter a unique file name 
select drawing type - Shape symbol 
in the editor - go to Shape add polygon 
draw the shape 
save (Important - make sure the Setup Drawing Parameters is set to Type:
Shape) 

Open padstack editor 
go to layers tab 
select each appropriate layer and change the geometry to shape (under
Regular Pad) 
pick the nav button beside Shape and find the unique file name you
assigned to the pad shape 

This still leaves a problem in my symbol. It has 8 pins and the heatsink
adds a 9th pin. This means I have to add another pin to the schematic
symbol in order to tie the heatsink to the appropriate same net pins. 

Hope this helps 

Ed 



"Milostnik Matija    ITWEH7" <milostnik@xxxxxxxxxxx> 


12/14/2005 10:21 AM 




To
<Ed.Caldwell@xxxxxxxxxx>        

cc

        

Subject
RE: [PCB_FORUM] Re: Heatsink Pad        



        
        





Hello, 
 
very unfriendly from you, not to tell HOW did you figure it out. 
 
It is nice that you found a solution, but it would be even nicer, if you
just would tell something like this: 
============================== 
never mind - figured it out by pushing on the third button from the left
on the opening page. 
Ed 
============================== 
 
Bye 
 Matija 
 
 


  _____  

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Ed Caldwell
Sent: Wednesday, December 14, 2005 3:58 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Heatsink Pad


never mind - figured it out 
Ed 

Ed Caldwell <Ed.Caldwell@xxxxxxxxxx> 
Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx 


12/14/2005 09:11 AM 



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<icu-pcb-forum@xxxxxxxxxxxxx>   

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Subject
[PCB_FORUM] Heatsink Pad        





        
        







How do I generate a polygon Heatsink solderpaste pad? The symbol editor
accommodates copper and soldermask but no solderpaste. Is this done with
a custom padstack? If so, how do I generate the polygon padshape so that
I can import it into the padstack editor? 

Thanks,
Ed 

Ed Caldwell
Circuit Board Designer
Voice: 770-622-8707
Email: mailto:ed.caldwell@xxxxxxxxxx 



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