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Do We Have a New Release of IPC-7351C?
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dramos View Drop Down
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    Posted: 29 Jul 2022 at 3:56am
Hi to all, 

Watching a new video from Altium Academy,


I realized that they mention on one of their slides the IPC-7351C. 



Is there any news about it?

Thanks a lot for your comments.

Regards,
daraga
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Tom H View Drop Down
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Points: 5716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jul 2022 at 8:12am
For the past 6 years IPC has been working on updating the Surface Mount section in the IPC-7351C draft. 

Then the IPC Land Pattern Committee paused for a year to focus on Through-hole guidelines for a new document called IPC-7352 and get that released ASAP. 

Then the IPC Land Pattern Committee decided to combine Through-hole and Surface Mount in the new IPC-7352 and scrap the IPC-7351C. 

Every reference to IPC-7351C must be deleted or scrubbed from the electronics industry. 

IPC-7352 should be released at the end of the year. It just went to ballot vote last month. 
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dramos View Drop Down
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Points: 61 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dramos Quote  Post ReplyReply Direct Link To This Post Posted: 31 Jul 2022 at 11:49pm
Hi Tom,
Many thanks for the info. 
I hope to be able to read the new spec next winter.
Best regards,
dramos
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Points: 61 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dramos Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2022 at 3:56am
Dear Tom,

Any news about IPC-7352 ?

Santa is coming.... 

Regards
David
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Tom H View Drop Down
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Points: 5716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2022 at 8:26am
The IPC-7352 was voted on and approved last month and sent to typesetting. 

It should be released by the end of the year and ready for the IPC Store at IPC APEX in San Diego the first week of February 2023. 
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dramos View Drop Down
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Thanks for the info, Tom !!!  
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Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NJ_Ecad_Guy Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2022 at 8:02am
Hi Tom,

Presuming IPC-7352 would change a lot of calculations for pads etc. Do you have a timeline for supporting it?

Regards,

Ken
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Tom H View Drop Down
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The IPC-7352.opt file is already on your computer. 

Select "Tools > Options > Open > IPC-7352" 

It turns off the fabrication and Assembly tolerances and updates all negative solder joint goals to 0.00. 

This will affect you pad stack calculations by +/- 0.05 in the length and width. 

There is also a IPC-7352 land pattern naming convention that we will support as a new Console Option. 
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Dear Tom,

The new naming convention is going to differ from the PCB Libraries naming convention that was defined in Console Options till now?

From which version is going to available in Footprint Expert?

Regards,
david
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Tom H View Drop Down
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Points: 5716 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 30 Nov 2022 at 10:02am
5-years ago the chairperson of the IPC 1-13 Land Pattern Committee (Karen McConnell) wanted to update the IPC-7351C footprint naming convention. It took a couple months of effort and back and forth to establish a naming convention that would greatly eliminate duplication of footprint names by simply added additional details like Terminal Lead Length, Thermal Pad Size, BGA Ball Size, SOP Body Length and so on. 

We put the IPC-7351C in Library Expert V2017. We created Power Point presentations of all the changes and updates coming in IPC-7351C. 

Then 2 years ago Karen McConnell retired from the 1-13 committee chairperson and Gary Ferrari stepped down as Vice Chairman. 

IPC elected a new Chairman to take over and the decision was made to scrap 6 years of effort into IPC-7351C revert back to IPC-7351B and simply enhance it by adding Through-hole technology. 

The IPC-7351B naming convention was kept in tact but the committee added a couple features to improve it. 

One of the basic differences between IPC-7351C and IPC-7352 Naming Convention is the Pin Quantity. 
IPC-7351C relocated the Pin Quantity to the front of the Footprint Name. 
IPC-7351B had the Pin Quantity at the end of the Footprint Name. 

Footprint Expert V23 will support three Footprint Naming Conventions. 
  1. PCB Libraries (which is IPC-7351C)
  2. IPC-7351B
  3. IPC-7352
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