PCB Libraries Forum : No Silkscreen Created For QFN https://www.PCBLibraries.com/forum/ Tue, 07 Apr 2026 14:31:25 +0000 Wed, 28 Nov 2012 09:08:51 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=704 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[No Silkscreen Created For QFN : Using the CAD tool editor...]]> https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2432.html#2432 Author: Tom H
Subject: 704
Posted: 28 Nov 2012 at 9:08am

Using the CAD tool editor I would make my part look like this -
 
 
The current PCB Footprint Editor is a basic "Template" tool for "Standard Component Packages".
 
This QFN is just outside the "Standard" category. So until the FPE program introduces interactive editing you'll have to spend a couple minutes adding some custom silkscreen lines using your CAD tool library editor.
 
]]> Wed, 28 Nov 2012 09:08:51 +0000 https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2432.html#2432 <![CDATA[No Silkscreen Created For QFN : So you would recommend leaving...]]> https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2430.html#2430 Author: chads108
Subject: 704
Posted: 28 Nov 2012 at 8:49am

So you would recommend leaving all silkscreen off of this part other than the polarity mark?]]> Wed, 28 Nov 2012 08:49:35 +0000 https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2430.html#2430 <![CDATA[No Silkscreen Created For QFN : The component leads are very...]]> https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2429.html#2429 Author: Tom H
Subject: 704
Posted: 28 Nov 2012 at 8:46am

The component leads are very close to the package corners where the silkscreen is normally placed outside the component package and inside the placement courtyard.
 
You need to manually add a line or dot polarity mark in your CAD tool editor.
 
This is a workaround until we add interactive editing in the PCB Footprint Editor.
 
 
]]> Wed, 28 Nov 2012 08:46:58 +0000 https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2429.html#2429 <![CDATA[No Silkscreen Created For QFN : I have a QFN package I created...]]> https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2428.html#2428 Author: chads108
Subject: 704
Posted: 28 Nov 2012 at 8:36am

I have a QFN package I created with Library Expert, but the silkscreen did not get defined. 
 
As expected?  If so, how to handle pin 1 marking?
 
Link to part in question: http://www.enpirion.com/products-dcdc-converter-step-down-buck-ep53f8qi.htm
 
Chad
]]> Wed, 28 Nov 2012 08:36:47 +0000 https://www.PCBLibraries.com/forum/no-silkscreen-created-for-qfn_topic704_post2428.html#2428