Grid for Part Creation and Placement
Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=2533
Printed Date: 26 Nov 2024 at 6:29am
Topic: Grid for Part Creation and Placement
Posted By: USER2
Subject: Grid for Part Creation and Placement
Date Posted: 30 Sep 2019 at 10:23am
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Hi, I have a basic question that i would like to hear opinions - What grid value we should use for any type of part creation? Surface Mount and Through-hole both small & big? What is the placement grid should be used for design? Thanks! |
Replies:
Posted By: Tom H
Date Posted: 30 Sep 2019 at 10:42am
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It depends on the type of PCB layouts you have. High Density or Low Density. For PCB layouts that have Low Density part placements, the best PCB library "Pad Size" round-off and "Pad Place Round-off" grid would be 0.05 mm. The Part Placement Grids are 1 mm for large parts, 0.5 mm for medium size parts and 0.1 mm for small parts. For PCB layouts that have High Density part placements, the best PCB library "Pad Size Round-off" and "Pad Place Round-off" grid would be 0.01 mm. The Part Placement Grids are 1 mm for large parts, 0.5 mm for medium size parts and 0.1 mm for small parts. Trace Width is 0.1 mm and route grid is 0.05 mm. Here is the routing example where SMD via fanout is on a 0.5 mm grid system placed 1 mm apart.  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |