PCB Libraries Forum : Weird looking SOP STEP Models https://www.PCBLibraries.com/forum/ Tue, 14 Apr 2026 16:51:52 +0000 Thu, 21 Jul 2022 05:36:52 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3145 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Weird looking SOP STEP Models : I see. Thank you, Tom. ]]> https://www.PCBLibraries.com/forum/weird-looking-sop-step-models_topic3145_post12512.html#12512 Author: SDTKO
Subject: 3145
Posted: 21 Jul 2022 at 5:36am

I see. Thank you, Tom.
]]> Thu, 21 Jul 2022 05:36:52 +0000 https://www.PCBLibraries.com/forum/weird-looking-sop-step-models_topic3145_post12512.html#12512 <![CDATA[Weird looking SOP STEP Models : This is because the calculation...]]> https://www.PCBLibraries.com/forum/weird-looking-sop-step-models_topic3145_post12509.html#12509 Author: Tom H
Subject: 3145
Posted: 20 Jul 2022 at 9:02am

This is because the calculation for the terminal leads is too tight. 

The difference between the He and E dimensions is only 1 mm or 0.5 mm on each side. 

The L dimension is 0.5. 

If you include the nominal c dimension 0f 0.15 for the metal thickness and the bend radius of the terminal lead, there's not enough room to calculate a proper terminal lead. 

This Nexperia package is unique. 

A normal SOP the difference between He and E is greater than 1.5 mm and the terminal leads will come out proper. 

]]> Wed, 20 Jul 2022 09:02:26 +0000 https://www.PCBLibraries.com/forum/weird-looking-sop-step-models_topic3145_post12509.html#12509 <![CDATA[Weird looking SOP STEP Models : Hi there,for some SOP packages...]]> https://www.PCBLibraries.com/forum/weird-looking-sop-step-models_topic3145_post12508.html#12508 Author: SDTKO
Subject: 3145
Posted: 20 Jul 2022 at 5:56am

Hi there,

for some SOP packages FPX produces weird looking STEP models, e. g. for Nexperia 74HCT2G125DP,125. See attached file.

Regards




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