Weird looking SOP STEP Models
Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: 3D Models
Forum Description:
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3145
Printed Date: 12 Oct 2024 at 5:22pm
Topic: Weird looking SOP STEP Models
Posted By: SDTKO
Subject: Weird looking SOP STEP Models
Date 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 https://abload.de/image.php?img=nexperia_74hct2g125dpe6kxt.jpg" rel="nofollow">  |
Replies:
Posted By: Tom H
Date 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. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: SDTKO
Date Posted: 21 Jul 2022 at 5:36am
|
I see. Thank you, Tom. |