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Geometry Too Small for Silkscreen Outline

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=3014
Printed Date: 07 Oct 2024 at 3:31am


Topic: Geometry Too Small for Silkscreen Outline
Posted By: ChrisChris
Subject: Geometry Too Small for Silkscreen Outline
Date Posted: 15 Nov 2021 at 5:52pm
Hello,

I'm new to the tools and PCB footprint design in general and I haven't had any luck searching for this in the forum so far. I'm creating a simple 0603 footprint for a PPTC fuse and I'm getting the attached warning after calculating:

uploads/16545/too_small.png" rel="nofollow - uploads/16545/too_small.png

I have "Use manufacturer's recommended dimensions" UNCHECKED, so this calculation should be the IPC-compliant version of the footprint. I would think it would be possible to fit the silkscreen annotations in a 0603 footprint, no? 

My relevant drafting settings are as follows:

uploads/16545/settings.png" rel="nofollow - uploads/16545/settings.png

Thank you in advance for your help.

Chris


Replies:
Posted By: Tom H
Date Posted: 15 Nov 2021 at 10:27pm
The silkscreen outline is auto-generated by your Option Settings. 

If Footprint Expert only obeys your rules. To small is to small to obey your rules. 

You have 2 options. 
  1. Add a Drafting Outline > Rectangular > Silkscreen > your x/y dimensions - then save to FPX library
  2. Move the chip from the Calculator to FP Designer. FP Designer auto generates a silkscreen outline if the rules are violated. 



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Posted By: ChrisChris
Date Posted: 17 Nov 2021 at 8:59am
OK, thanks Tom.


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