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SIP Alignment |
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ransonjd 
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Joined: 15 Nov 2016 Status: Offline Points: 147 |
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 Topic: SIP AlignmentPosted: Yesterday at 12:10pm |
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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.
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Tom H
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Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 6091 |
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Posted: Yesterday at 12:58pm |
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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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ransonjd
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Joined: 15 Nov 2016 Status: Offline Points: 147 |
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Posted: 21 hours 6 minutes ago at 7:11pm |
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The direction of the offset was flipped between 2025.04 and 2026.08. The same FPX gives different footprints. I was wondering when it happened. --John
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Tom H
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Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 6091 |
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Posted: 1 hour 14 minutes ago at 3:03pm |
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I discussed this issue with the programmer and the through-hole SIP E1 dimension was swapped because in V25 a positive value moved the row down and a negative value moved the pins up.
This didn't make logical sense and was updated so a positive E1 offset moved the pins up and a negative value moves the pins down. Sorry for the update, but the original release was incorrect and fixed in V26. |
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