Naming Convention

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   IPC-7352 adds through-hole guidelines, updates surface mount guidelines and completely replaces IPC-7351. 
IPC-7352 was approved by committee ballot vote after 2nd go around and submitted to typesetting on September 27, 2022. 

It normally takes 3 - 4 months of typesetting and proofing. 

On January 18, 2023 a land pattern committee member asked to add Imperial Units to all dimensions. This might be the hold up, but I don't know why IPC would backtrack on it's commitment to only produce standards in metric units. 

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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: Offline Points: 5716	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 16 Feb 2023 at 2:15pm
	IPC-7352 adds through-hole guidelines, updates surface mount guidelines and completely replaces IPC-7351. IPC-7352 was approved by committee ballot vote after 2nd go around and submitted to typesetting on September 27, 2022. It normally takes 3 - 4 months of typesetting and proofing. On January 18, 2023 a land pattern committee member asked to add Imperial Units to all dimensions. This might be the hold up, but I don't know why IPC would backtrack on it's commitment to only produce standards in metric units.
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bolaandrews Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 08 Mar 2023 Status: Offline Points: 1	Post Options Post Reply Quote bolaandrews Report Post Thanks(0) Quote Reply Posted: 10 Mar 2023 at 8:40am
	Hey Tom, Is there any update on IPC-7352

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: Offline Points: 5716	Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Posted: 10 Mar 2023 at 10:07am
	I don't have a clue. It's been silent at IPC. It's not even mentioned that there's a Land Pattern Committee meeting at IPC SummerCon in Milwaukee in May. I just post several questions on IPC Works asking for the status and whether or not the holdup is due to adding Imperial Units to the publication.
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zentekfr Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 04 Jan 2022 Status: Offline Points: 83	Post Options Post Reply Quote zentekfr Report Post Thanks(0) Quote Reply Posted: 17 Mar 2023 at 6:38am
	Hello Tom, Regarding the naming convention, we currently use the "PCB Libraries" option. Would you recommend to switch to IPC-7352? Changes between the two are still unclear to me. Thanks!

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: Offline Points: 5716	Post Options Post Reply Quote Tom H Report Post Thanks(1) Quote Reply Posted: 17 Mar 2023 at 8:57am
	The biggest difference between PCB Libraries and IPC-7352 Footprint Naming Conventions is the Pin Quantity location. PCB Libraries follows the original IPC-7351C naming convention where the chair person of the IPC Land Pattern committee Karen McConnell relocated the Pin Qty. to the beginning of the footprint name. The full subcommittee of the 7351 voted and approved the new naming convention that Karen introduced. The component family, pin qty. and pin pitch are together, followed by the package dimensions. Example: SOP24P65_780X640X120L60X24 The IPC-7352 guide went back to the original IPC-7351B where the pin qty. was at the end of the Footprint Name. The component family, pin pitch are together, followed by the package dimensions and the pin qty last. Example: SOP65P640X120-24 One of the problems with the 7352 for SOP packages, they didn't add the Package Length in the name and many people have been burned by this. Also, the Terminal Length is not included.
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