PCB Libraries Forum : SOP With Flat Lead https://www.PCBLibraries.com/forum/ Fri, 10 Apr 2026 00:10:48 +0000 Fri, 19 Apr 2019 08:20:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=2473 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[SOP With Flat Lead : That&#039;s a big heat sink package.If...]]> https://www.PCBLibraries.com/forum/sop-with-flat-lead_topic2473_post10203.html#10203 Author: Tom H
Subject: 2473
Posted: 19 Apr 2019 at 8:20am

That's a big heat sink package. 

If you're purchasing this part from NXP, you should ask them for their mfr. recommended solder pattern. 

This large package is outside the scope of any standard package.
 
]]> Fri, 19 Apr 2019 08:20:47 +0000 https://www.PCBLibraries.com/forum/sop-with-flat-lead_topic2473_post10203.html#10203 <![CDATA[SOP With Flat Lead : Just trying to create the footprint...]]> https://www.PCBLibraries.com/forum/sop-with-flat-lead_topic2473_post10202.html#10202 Author: Batiskaff
Subject: 2473
Posted: 19 Apr 2019 at 6:16am

Just trying to create the footprint for this "exemplar "Smile:
https://www.nxp.com/docs/en/package-information/SOT1429-1.pdf 

I don't know how it will be soldered. Will the leads bended or not?

What is the pad length should be?

I think  Pad Length = (He - E3)/2 + Toe + Heel

Any ideas or recommendations for this type of package?

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