SODFL & SOTFL
Printed From: PCB Libraries Forum
Category: General
Forum Name: General Discussion
Forum Description: general topics not related to other forums
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3244
Printed Date: 22 Nov 2024 at 12:00am
Topic: SODFL & SOTFL
Posted By: mohamedjubair.k
Subject: SODFL & SOTFL
Date Posted: 03 Mar 2023 at 4:13am
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Hi Tom, I read the IPC-7351 document and I did not see solder joint goal table for flat leads [SODFL and SOTFL] components. But in library calculator Toe joint value found as 0.20 mm. From where did they find this value. Is this 0.20 mm is fine for Toe end.  |
Replies:
Posted By: Tom H
Date Posted: 03 Mar 2023 at 8:59am
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Per IPC J-STD-001 Standard, the Toe value is determined by the Terminal Lead Thickness. This is the example of the Gull Wing Terminal Lead form.  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: mohamedjubair.k
Date Posted: 03 Mar 2023 at 6:10pm
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Hi Tom, Thank you for you quick reply. Actually I need information about Flat Lead component like attached.  |
Posted By: Tom H
Date Posted: 04 Mar 2023 at 9:45am
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It's the same concept. You take the "Nominal c" dimension (and round up to the nearest 0.05) and that is your Toe goal. Anything bigger than that is a waste of PCB real-estate and excess solder. The main strength in the solder joint is under the terminal lead.  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: mohamedjubair.k
Date Posted: 05 Mar 2023 at 8:53am
| Thank you so much Tom! |