IPC-7351 & IPC-7352 Standard SMD Terminal Leads

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   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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Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Online Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Topic: IPC-7351 & IPC-7352 Standard SMD Terminal Leads 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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Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Online Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply 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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circuits Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 13 Aug 2024 Status: Offline Points: 2	Post Options Post Reply Quote circuits Report Post Thanks(0) Quote Reply 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.