Electrolytic capacitors

[Henrik Kronborg]

is there no generator for electrolytic capacitors in the landpattern calculator?
I have found some pdf's with the most common types ( A, B, C, etc. ) but the one I need is a 8x10.5 ( metric :) )

[Henrik Kronborg]

The landpatterns for Capacitors A, B, C etc. what are they made with?


The datasheet for the one i'm talking about can be found here: http://www.niccomp.com/Catalog/taping6.pdf

It's case dimensions is 8x10.5. :)

[Tom]

Henrik,

We did some research on Aluminum Electrolytic Capacitors two months ago because we found conflicting manufacturer dimensional data. It almost seems that manufacturers intentionally look at their competitors and make their parts different to eliminate multiple source price war situations. I.E.: If you use a particular land pattern for an CAPAE you have to go with that specific vendor regardless if the assembly shop just purchased a fire sale skid from an alternate source.

Panasonic is the manufacturer that we used because they are very close to United-Chemi-Con. Nichicon's capacitor dimensions are different. And because we realized that there is no written standard by JEDEC or IPC, they can do what they want. Actually they do what they want anyway even when a standard exists.

So we added Aluminum Electrolytic Capacitors to the Land Pattern Calculator over a month ago so that you can build accurate Aluminum Electrolytic Capacitors regardless of the manufacturers part dimensions. The only issue we haven't dealt with yet is the naming convention for all these different parts. The default name would be "CAPAE_Mfg Part Number".

By the way, IPC made an agreement this year with JEDEC that IPC would pull out of the component dimensional data standard and give that entire responsibility to JEDEC. So in the future IPC-SM-782 books, all component dimensional data will be referenced to a JEDEC specification.

[Henrik Kronborg]

One month.....ups, sorry Tom :/

I just couldn't find the drawing of the capacitor that is used in your your pdf files.

One must hope that companies like Nichicon gets punished for "breaking" the standard, but Unfortunely they are not the only ones that make their own "standard".