Question About Dimensions Being Rounded-off in IPC

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hello Everyone,
I have a question regarding the rounding of dimensions based on the IPC-7351B standard for land pattern calculations.
Shouldn't the dimensions being rounded off be the final land pattern dimensions—overall length of the land pattern (Z), distance between lands in the pattern (G), and width of the land pattern (X)? Why is Library Expert rounding off the pad-to-pad spacing (C) and pad length (Y) instead?
Thank you!

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
elibu123 Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 22 Aug 2024 Status: Offline Points: 2	Post Options Post Reply Quote elibu123 Report Post Thanks(0) Quote Reply Topic: Question About Dimensions Being Rounded-off in IPC Posted: 28 Aug 2024 at 12:40pm
	Hello Everyone, I have a question regarding the rounding of dimensions based on the IPC-7351B standard for land pattern calculations. Shouldn't the dimensions being rounded off be the final land pattern dimensions—overall length of the land pattern (Z), distance between lands in the pattern (G), and width of the land pattern (X)? Why is Library Expert rounding off the pad-to-pad spacing (C) and pad length (Y) instead? Thank you!



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: 5719	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 28 Aug 2024 at 1:44pm
	Everything is explained in the new V24.10 Footprint Expert "Help > User Guide".
	Stay connected - follow us! X - LinkedIn