PCB Libraries Forum : IPC-7351 & IPC-7352 Standard SMD Terminal Leads https://www.PCBLibraries.com/forum/ Tue, 14 Apr 2026 23:59:17 +0000 Tue, 13 Aug 2024 06:39:58 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3369 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[IPC-7351 & IPC-7352 Standard SMD Terminal Leads : The IPC-7351 and IPC-7352 standards...]]> https://www.PCBLibraries.com/forum/ipc7351-ipc7352-standard-smd-terminal-leads_topic3369_post13608.html#13608 Author: circuits
Subject: 3369
Posted: 13 Aug 2024 at 6:39am

The IPC-7351 and IPC-7352 standards are essential guidelines for SMD (surface mount device) terminal leads, providing comprehensive recommendations for the design, placement and soldering of components on PCBs. These standards ensure consistency and reliability in the manufacturing process, which is crucial for maintaining product quality.

In my recent blog post on IPC Standards for PCB Manufacturing and Assembly, I examined these guidelines in more detail, including best practices for adhering to them in your designs. If you are interested in a deeper dive into how IPC standards can improve your PCB manufacturing and assembly processes, you may find it helpful.
]]> Tue, 13 Aug 2024 06:39:58 +0000 https://www.PCBLibraries.com/forum/ipc7351-ipc7352-standard-smd-terminal-leads_topic3369_post13608.html#13608 <![CDATA[IPC-7351 & IPC-7352 Standard SMD Terminal Leads : The anatomy of the human leg is...]]> https://www.PCBLibraries.com/forum/ipc7351-ipc7352-standard-smd-terminal-leads_topic3369_post13483.html#13483 Author: Tom H
Subject: 3369
Posted: 07 Apr 2024 at 1:19pm

The anatomy of the human leg is used to determine the Surface Mount Toe and Heel of the solder joint definition. 


]]> Sun, 07 Apr 2024 13:19:52 +0000 https://www.PCBLibraries.com/forum/ipc7351-ipc7352-standard-smd-terminal-leads_topic3369_post13483.html#13483 <![CDATA[IPC-7351 & IPC-7352 Standard SMD Terminal Leads : Here are the 15 Standard Surface...]]> https://www.PCBLibraries.com/forum/ipc7351-ipc7352-standard-smd-terminal-leads_topic3369_post13482.html#13482 Author: Tom H
Subject: 3369
Posted: 07 Apr 2024 at 1:13pm

Here are the 15 Standard Surface Mount Terminal Lead Forms represented in the IPC-7351 and IPC-7352. 

The first bend in the lead is referred to as the Knee. The second bend is the Heel and the end of the lead is the Toe. 

For Grid Array and BTC leads, the solder joint goal is a Periphery. 



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