Footprint for Chip Tantalum Capacitor With Nib
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=1503
Printed Date: 07 Oct 2024 at 1:24pm
Topic: Footprint for Chip Tantalum Capacitor With Nib
Posted By: lsday
Subject: Footprint for Chip Tantalum Capacitor With Nib
Date Posted: 15 Dec 2014 at 8:14am
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Why haven't you come up with footprints for the capacitors with nibs? These type capacitors always seem to be a problem to calculate footprints for?
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Replies:
Posted By: Tom H
Date Posted: 15 Dec 2014 at 9:06am
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We have Capacitors with Nibs for a long time. They are "Chip, Polarized Capacitors" and the 3D STEP model looks perfect from Library Expert. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: lsday
Date Posted: 15 Dec 2014 at 9:23am
| I am not interested in a 3D model. I want to be able to calculate a landpattern from the viewer and there is no choice for that. I am am new to your calculator and it is the free one. |
Posted By: Tom H
Date Posted: 15 Dec 2014 at 9:28am
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The choice is "Chip, Capacitor, Polarized"
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Posted By: lsday
Date Posted: 15 Dec 2014 at 9:35am
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I see it now. I spoke too soon without actually looking at the viewer properly.
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Posted By: carkifelek
Date Posted: 05 Jan 2015 at 3:47pm
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Tom, It actually is a little confusing. I actually had to spend some time getting the correct footprint for these polar capacitors. If the name could simply be changed to polarized capacitors, it might actually save some time for other people who’ll be having this issue in the future. I’m not saying it’s an issue per se but it might just make it easier for people to search for these pads. http://www.7pcbmanufacturing.com/" rel="nofollow - printed circuit board manufacturing |
Posted By: Tom H
Date Posted: 05 Jan 2015 at 6:10pm
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We'll be releasing a new document this week that clearly defines every component family with 3D model pictures, land patterns, pin assignments, silkscreen, zero component orientation, recommended pad shape, component lead terminals superimposed with pad (graphic on a mechanical layer) in the CAD footprint and solder joint goal tables for each lead style. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: Louis_Guerin
Date Posted: 16 Oct 2015 at 8:20am
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Hi Tom, I'm a bit confused when I look at the table from Vishay; http://www.vishay.com/docs/40006/594d.pdf I try to build one having the case C but some value given are either max or ref. Also does dimension J is important in this case? |
Posted By: Tom H
Date Posted: 16 Oct 2015 at 8:26am
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Use these dimensions: D = body Length W - Body Width A = Terminal Width H = Height Do not use the L or J dimensions. The NIB sticks up in the air and solder goes under it. Use the Polarized Capacitor component family. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: Louis_Guerin
Date Posted: 16 Oct 2015 at 8:40am
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Hi Tom, D does not have a min or max or tolerance, in this case do I put 6mm on both min and max? Also does the courtyard will be enough for the max component lenght of 7.1mm which IMHO should not be centered?
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Posted By: Tom H
Date Posted: 16 Oct 2015 at 8:45am
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If the component mfr. does not provide a tolerance, you need to add a nominal tolerance of +/- 0.15 mm Every dimension has a tolerance. Never put the Nominal dimension in the Min/Max cells. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |