IPC-7352 incorrect table content?
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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=3645
Printed Date: 19 May 2026 at 9:33am
Topic: IPC-7352 incorrect table content?
Posted By: eCADLER_94
Subject: IPC-7352 incorrect table content?
Date Posted: 19 May 2026 at 3:48am
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Hello, I believe that table 3-6 "Leadless Components with Concave/Castellated Termination" cannot be correct. Let's take the Nominal column, here the Toe would be 0.15mm and the Heel 0.45mm. In my opinion, it doesn't make much sense to pull the pad that far back. Also confusing is the note "to find Z dim" next to the Heel(JH). The formula for Z (overall length of land pattern) is: Z = Lmax +2xJt This therefore has nothing to do with the Heel. In my opinion, the table values of Toe and Heel are swapped.
Do you see it that way too?" Best regards Johannes |
Replies:
Posted By: Tom H
Date Posted: 19 May 2026 at 7:30am
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I think you are correct. IPC got the Toe and Heel values backward. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |