Naming issue

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Hi,When I create new footprint in Library Expert Enterprise I can see the "N" for Nominal in the name.
However, when I add the footprint to my FPX library the N is no longer shown. See 2nd pic below.
Is there a way to fix this?

Also, and this may be related to my issue, what is the difference between the footprint naming conventions of IPC-7351B vs PCB Libraries? I'm currently using PCB Libraries' naming conventions.

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jheimlich Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 10 Oct 2017 Status: Offline Points: 10	Post Options Post Reply Quote jheimlich Report Post Thanks(1) Quote Reply Topic: Naming issue Posted: 19 Jul 2018 at 4:18am
	Hi, When I create new footprint in Library Expert Enterprise I can see the "N" for Nominal in the name. However, when I add the footprint to my FPX library the N is no longer shown. See 2nd pic below. Is there a way to fix this? Also, and this may be related to my issue, what is the difference between the footprint naming conventions of IPC-7351B vs PCB Libraries? I'm currently using PCB Libraries' naming conventions.



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 19 Jul 2018 at 6:59am
	The FPX file only contains Component Dimensions. You can't assign a Density Level to Component Dimensions. Preferences has all the other things (Orientation, Pad Shape, Drafting Outlines, Solder Joint Goals, Rules) that make a land pattern footprint including the Density Level. The Footprint Name is neutral until you generate the PCB library part by combining the Component Dimensions with the Preferences.
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Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 19 Jul 2018 at 7:01am
	Also, you do not need to enter "b1" or "L1" dimensions if they are identical to "B" & "L". b1 & L1 are optional and are only intended to use if the values are different.
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jheimlich Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 10 Oct 2017 Status: Offline Points: 10	Post Options Post Reply Quote jheimlich Report Post Thanks(0) Quote Reply Posted: 19 Jul 2018 at 12:33pm
	Thanks. Got it Tom. FYI - I know the boxes with the blue dots are optional. It's kind of an OCD thing for me to fill them in... My other question was about the difference between IPC-7351B naming conventions versus PCB Libraries naming conventions. What are the differences?

Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 19 Jul 2018 at 12:48pm
	The PCB Libraries naming convention is IPC-7351C, but IPC has no scheduled release date for the 7351C. IPC was getting notified by many of our customers asking when 7351C will be released. As a consequence, IPC asked us to remove all occurrences of 7351C on our website and in our software because 7351C may not be released for another year or more and it may change (update) again. But we can't wait because there are too many issues with the IPC-7351B naming convention.
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