Seeking ferrite cores, a good distributor with many parts?

Hi

I am working on a magnetics design and I need to try out a lot of different configurations, with different sizes and types of ferrite cores. For starters just E-cores

Digikey, Farnell and mouser has very few E-cores. I found a german site with some obscure types, but none that have different E-cores with different AL values (airgaps)

I could ask the FAE from Epcos, Philips and the like, but that takes forever to arrive at the desk.

Anyone know of a good site?

Thanks

Klaus

 

Yes, their web site is crummy but the company is great and support is
excellent (and fast):

http://www.kaschke.de/en/home/

If you need a contact there let me know and I'll dig it out. As for air
gaps, vendors might offer a few (very few) standard values that suit
flybacks but typically you have to make your own. Either get some shim
material or find a local shop that can grind down the center pod without
splintering too much off of the ferrite. If you grind it yourself
_never_ do that without eye protection. I knew a guy who did something
like that without, he didn't lose that eye but said the pain was terrible.

 

Here is a distributor, these guys are good.
You should be able to get some samples if they don't have stock.

http://www.elnamagnetics.com/


Cheers

 

configurations, with different sizes and types of ferrite cores. For
starters just E-cores

with some obscure types, but none that have different E-cores with
different AL values (airgaps)

Allstar Magnetics

 

In addition to the others,
http://www.adamsmagnetic.com/

Amidon has a good catalog, but you'll only see the products they chose to
list. Their ferrites are primarily Fair-Rite or Magnetics Inc., while
their powdered irons are from Micrometals.

Adams, Elna and most others *don't* have an online catalog, at least not
in the way we're familiar with, like Digikey and them do. You'll have to
go back and forth a few times between manufacturer's product listing,
checking that they even make the kind of thing you're looking for (shape,
material, A_e, gap, etc.), then checking if that part is carried and in
stock.

The largest manufacturers carried by these companies are usually among:
Fair-Rite
EPCOS/TDK
Ferroxcube
Magnetics Inc. (ferrite, powdered iron, stripwound)
Micrometals (powdered iron)
VAC and HMG (amorphous/nanocrystalline)

Tim

 

As does MuRata (resistors, too).

 

Thank you all for some good links ;-)

Cheers

Klaus

 

Most design work will not allow 'a lot of different configurations',
based on some simple preliminary calculations, on paper.

You'll get more support and useful samples from suppliers if you have
a ballpark idea of your actual needs, for a specific application.

RL

 

Here's another.

Industrievertretungen
Wolfgang Bieber GmbH
Ostergasse 4
86577 Sielenbach

Tel: 08258-997388-0
Fax: 08258-997388-9

e-Mail:
web: http://www.ferrite.de

I bought a small quantity of Ferroxcube EP13-3E55-A100 cores from
them - "low distortion" cores for ADSL, though that's not what I'm
using them for - and they were quick and helpful.

I would have posted this earlier, but my file swapping onto my new
computer didn't work as well as it should have and the relevant bunch
of e-mails didn't make it on the first attempt.

 

Or other wise pls call on us our direct no is 91 4424968017