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IPC-7351 & IPC-7352 Standard SMD Terminal Leads

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Tom H View Drop Down
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    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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post 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. 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote circuits Quote  Post ReplyReply Direct Link To This Post 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.
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