DFN 4 Pins - Side (Not Bottom Only)
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=2856
Printed Date: 07 Oct 2024 at 1:18am
Topic: DFN 4 Pins - Side (Not Bottom Only)
Posted By: davidhadley
Subject: DFN 4 Pins - Side (Not Bottom Only)
Date Posted: 23 Mar 2021 at 2:08am
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Hi All, I'm trying to create a 4 pin DFN (Oscillator) with side terminals so I need a toe but all settings seem to be for bottom only (periphery). Is it possible to set to Flat No-Lead Side (as seems an available option in the terminal preferences). Many thanks 
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Replies:
Posted By: Tom H
Date Posted: 23 Mar 2021 at 8:52am
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Are you sure it's a 4-pin DFN? I would use the mfr. pattern and build it in FP Designer. All unique patterns are created there. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: davidhadley
Date Posted: 24 Mar 2021 at 12:23am
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https://www.digikey.co.uk/products/en?keywords=SIT8008BI-12-33E-36.000000E%20" rel="nofollow - https://www.digikey.co.uk/products/en?keywords=SIT8008BI-12-33E-36.000000E
I cant use manufacturers recommendation as I've been told by production pads are too large and cause issues. Wondering why when you select 4-pin DFN it defaults to No Lead Side but then when you put calculations in it changes to No Lead Bottom Only (Periphery)? I have manually changed calculations to get what I want (0.2 toe, 0 side, 0 heel) but interested to know if there's a way of selecting No Lead Side for these types. Many thanks, David
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Posted By: Tom H
Date Posted: 24 Mar 2021 at 8:47am
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DFN's and LGA's are in the same component family. The Terminal Leads are 100% under the package. Therefore a Periphery solder joint goal is the only option. However, the part that you are referring to is not a DFN package. It's a Side Concave Oscillator.  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |