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008004 land pattern dimensions for high yield

Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: Footprints / Land Patterns
Forum Description: [General or a CAD specific issues / discussions]
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3393
Printed Date: 25 Nov 2024 at 1:21am


Topic: 008004 land pattern dimensions for high yield
Posted By: ransonjd
Subject: 008004 land pattern dimensions for high yield
Date Posted: 13 Jun 2024 at 7:34am
I'm going to be using 008004 (0201 metric) capacitors in an ultra-small design. 

I'd like to get as high assembly yield as possible, and I was wondering if there were any recommended low-defect land patterns? 

I've seen a number of papers on 01005 land patterns, but I haven't seen similar for 008004.  

I want as many data points as I can get. 

I have requested guidance from my assembler, and Murata provides a recommended range of dimensions. 



Replies:
Posted By: ransonjd
Date Posted: 13 Jun 2024 at 7:50am
For anyone else looking, I found this IPC APEX presentation from Fuji:

https://www.ipc.org/system/files/technical_resource/E40%26S06_03%20-%20Scott%20Wischoffer.pdf" rel="nofollow - https://www.ipc.org/system/files/technical_resource/E40%26S06_03%20-%20Scott%20Wischoffer.pdf

Posted By: SDTKO
Date Posted: 14 Jun 2024 at 1:29am
The only sane thing to do in this case - as you already figured out - is talking to your assembler.

For small chip packages, chances are that generic calculators and general recommendations do more harm than good.


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