PCB Libraries Forum Homepage
Forum Home Forum Home > PCB Footprint Expert > Questions & Answers
  New Posts New Posts RSS Feed - Footprint for Chip Tantalum Capacitor With Nib
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Footprint for Chip Tantalum Capacitor With Nib
 Post Reply Post Reply Page  12>
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
lsday View Drop Down
Active User
Active User


Joined: 15 Dec 2014
Status: Offline
Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lsday Quote  Post ReplyReply Direct Link To This Post Topic: Footprint for Chip Tantalum Capacitor With Nib
    Posted: 15 Dec 2014 at 8:14am

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?


Back to Top
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 2014 at 9:06am

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! X - LinkedIn
Back to Top
lsday View Drop Down
Active User
Active User


Joined: 15 Dec 2014
Status: Offline
Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lsday Quote  Post ReplyReply Direct Link To This Post 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.
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 2014 at 9:28am

The choice is "Chip, Capacitor, Polarized"

Stay connected - follow us! X - LinkedIn
Back to Top
lsday View Drop Down
Active User
Active User


Joined: 15 Dec 2014
Status: Offline
Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lsday Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 2014 at 9:35am

I see it now.

I spoke too soon without actually looking at the viewer properly.


Back to Top
carkifelek View Drop Down
New User
New User


Joined: 05 Jan 2015
Status: Offline
Points: 1 		Post Options Post Options   Thanks (0) Thanks(0)   Quote carkifelek Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2015 at 3:47pm

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. 

 printed circuit board manufacturing
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2015 at 6:10pm

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! X - LinkedIn
Back to Top
Louis_Guerin View Drop Down
Active User
Active User
Avatar

Joined: 29 Jan 2013
Location: Quebec
Status: Offline
Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Louis_Guerin Quote  Post ReplyReply Direct Link To This Post Posted: 16 Oct 2015 at 8:20am
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?
Back to Top
Tom H View Drop Down
Admin Group
Admin Group
Avatar

Joined: 05 Jan 2012
Location: San Diego, CA
Status: Offline
Points: 5718 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 16 Oct 2015 at 8:26am
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! X - LinkedIn
Back to Top
Louis_Guerin View Drop Down
Active User
Active User
Avatar

Joined: 29 Jan 2013
Location: Quebec
Status: Offline
Points: 24 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Louis_Guerin Quote  Post ReplyReply Direct Link To This Post Posted: 16 Oct 2015 at 8:40am
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?
Back to Top
 Post Reply Post Reply Page  12>

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.250 seconds.