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Definitions of Toe/Heel/Courtyard

Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: Footprints / Land Patterns
Forum Description: [General or a CAD specific issues / discussions]
URL: http://www.PCBLibraries.com/forum/forum_posts.asp?TID=2659
Printed Date: 21 Oct 2020 at 3:08am


Topic: Definitions of Toe/Heel/Courtyard
Posted By: jtweaver
Subject: Definitions of Toe/Heel/Courtyard
Date Posted: 27 Jul 2020 at 3:57am
I would like to know what is the proper footprint for a  0603 Chip LED.  I found this on PCB Libraries' website: 


So where is Toe measured from? Heel?  And what is Least Density? What is Courtyard?  



Replies:
Posted By: Tom H
Date Posted: 27 Jul 2020 at 8:39am
The proper footprint for every surface mount package is derived from the IPC-7351 mathematical model. 

Did you download and install the Free Library Expert Pro. No license required and it supports 25 CAD tools and 3D STEP. 

https://www.pcblibraries.com/LibraryExpert/Pro/" rel="nofollow - https://www.pcblibraries.com/LibraryExpert/Pro/  - V2019.07

Just enter the package dimensions and tolerances to calculate the perfect 0603 footprint. 



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Posted By: jtweaver
Date Posted: 28 Jul 2020 at 7:32am
Thank you, 

I have done so, it is very helpful.  

It would be nice to have a dimension tool for the generated footprint view. 




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