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SIP Alignment

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3664
Printed Date: 29 Jul 2026 at 2:36pm


Topic: SIP Alignment
Posted By: ransonjd
Subject: SIP Alignment
Date Posted: 29 Jul 2026 at 12:10pm
When did the direction of the E1 offset on SIP packages get flipped? 

It bit me on a new design, where a regenerated footprint had a mirrored layout. 

I think the new way is OK, I was just surprised.



Replies:
Posted By: Tom H
Date Posted: 29 Jul 2026 at 12:58pm
The E1 dimension is for the 'Offset' from the center. 

If the pins are centered, do not enter a E1 dimension as it's Optional. 

There is no SIP 'Mirror' feature in the current V26.07 release. 



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