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SOIC Step model

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=2047
Printed Date: 21 Nov 2024 at 9:42pm


Topic: SOIC Step model
Posted By: Guenter P
Subject: SOIC Step model
Date Posted: 04 Jan 2017 at 4:45am
How can I configure a Pin 1 dot instead of a Pin 1 chamfer for the 3D Step export?
Sample pictures and sample library attached.
 
uploads/10602/SampleSOIC.fpx" rel="nofollow - uploads/10602/SampleSOIC.fpx
 
Picture of pin 1 as expected:
uploads/10602/SOIC_Pin1_Dot.PNG" rel="nofollow - uploads/10602/SOIC_Pin1_Dot.PNG
 
Picture of pin 1 as exported with chamfer:
uploads/10602/SOIC_Pin1_Chamfer.PNG" rel="nofollow - uploads/10602/SOIC_Pin1_Chamfer.PNG


Replies:
Posted By: Tom H
Date Posted: 04 Jan 2017 at 3:00pm
SOIC's with a 0.05" (1.27 mm) pin pitch do not have a Pin 1 dot on the physical package.

Only metric pin pitch parts have a Pin 1 Dot.

You can color the Pin 1 3D Model Lead to a different color, but you cannot change 3D Model images in Library Expert.



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Posted By: Guenter P
Date Posted: 04 Jan 2017 at 6:39pm
I have some parts with a pitch >= 1.27mm with a pin 1 dot.
For these parts I can easily change the exported 3D step model before I integrate it into the layout library.
Thanks for Your quick answer.
 
 


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