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Courtyard Roundoff |
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Batiskaff 
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Joined: 30 Apr 2018 Status: Offline Points: 65 |
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 Topic: Courtyard RoundoffPosted: 03 Sep 2018 at 2:03am |
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In BGA: The Courtyard Place Round-off default setting is 0,10 mm
In QFP: The Courtyard Place Round-off default setting is 0,01 mm Are these settings similar or no? If no, why will rounded Courtyard Size in BGA, and Courtyard Place in QFP? Thanks for any reply. |
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Tom H
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Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5743 |
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Posted: 03 Sep 2018 at 8:25am |
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The Courtyard Excess setting for BGA's are much more robust than other component packages.
The BGA Courtyard Excess is determined by the Ball Diameter. However, the end user has 100% control of all the values in Preferences. i.e.: the user can change any default value in the program to fit your requirements. All the default values in Preferences are simply a recommendation and not a "Standard". Change the values to whatever you want for your personal custom library creation. |
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Volkmar
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Joined: 19 Mar 2012 Location: Germany Status: Offline Points: 15 |
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Posted: 28 Jan 2019 at 2:54am |
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Hi Tom, thanks for pointing that out. It would be nice though, to be able to save a value for the Courtyard Excess in the Preferences file for BGA, CGA and LGA components. A larger Courtyard Excess for Grid Array components is desirable for optical inspection e.g. with an endoscope like the Ersascope. Volkmar
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...yet there's method in't.
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Tom H
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Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5743 |
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Posted: 28 Jan 2019 at 8:01am |
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In Preferences, there is a different courtyard setting for each terminal lead diameter and the user can create as many Terminal Lead Diameters as they want.
Go to "Preferences > Terminals > SM Grid Array's > BGA, LGA or CGA" and there are tables for the various Lead Diameter's and each one has a separate Courtyard Excess. |
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