Where to get ethernet magnetics in small quantities

[Andras Tantos]

Hi!

I'm looking for 10BaseT magnetics for the Crystal CS8900 3V ethernet chip.
The main criteria there is the turns ration that should be 2.5:1/1:1. I
couldn't find any supplier who can ship small (<10) quantities in the USA.
Does anyone know of one? A couple of part No.s that would do:

Pulse Eng.: E2023
Bothhand: TS2023; LT1S023A; LT1T023C
Trans-power: HB624
BelFuse: S553-5999-F5

Thanks,
Andras Tantos

 

[Jeffrey Dutky]

"Andras Tantos" <andras_tantos@tantos.yahoo.com> wrote in message news:<3f96aa57$1@news.microsoft.com>...

Hi!

I'm looking for 10BaseT magnetics for the Crystal CS8900 3V ethernet chip.
The main criteria there is the turns ration that should be 2.5:1/1:1. I
couldn't find any supplier who can ship small (<10) quantities in the USA.
Does anyone know of one? A couple of part No.s that would do:

Pulse Eng.: E2023
Bothhand: TS2023; LT1S023A; LT1T023C
Trans-power: HB624
BelFuse: S553-5999-F5

Have you looked at Digi-Key? I just ordered a couple of RJ45 sockets with
integrated magnetics from them and they didn't make a fuss. I don't know if
they have the specific parts you're interested in, but I'd bet they have
something comparable.

Of course, the enterprising individual would simply wind their own (how
many turns are in the typical ethernet transformer?).

- Jeff Dutky

 

[Andras Tantos]

I'm looking for 10BaseT magnetics for the Crystal CS8900 3V ethernet
chip.
The main criteria there is the turns ration that should be 2.5:1/1:1. I
couldn't find any supplier who can ship small (<10) quantities in the
USA.
Does anyone know of one? A couple of part No.s that would do:

Pulse Eng.: E2023
Bothhand: TS2023; LT1S023A; LT1T023C
Trans-power: HB624
BelFuse: S553-5999-F5

Have you looked at Digi-Key? I just ordered a couple of RJ45 sockets with
integrated magnetics from them and they didn't make a fuss. I don't know
if
they have the specific parts you're interested in, but I'd bet they have
something comparable.

Thanks,

Usually DigiKey is my first stop if I look for something. However this time
I wasn't successfull locating anything. Could you be more specific? What was
the part no. DigiKey no. for this socket?

Of course, the enterprising individual would simply wind their own (how
many turns are in the typical Ethernet transformer?).

Regards,
Andras Tantos

 

[Jeffrey Dutky]

"Andras Tantos" <andras_tantos@tantos.yahoo.com> wrote in message news:<3f97064c$1@news.microsoft.com>...

I'm looking for 10BaseT magnetics for the Crystal CS8900 3V ethernet
chip.
The main criteria there is the turns ration that should be 2.5:1/1:1. I
couldn't find any supplier who can ship small (<10) quantities in the
USA.
Does anyone know of one? A couple of part No.s that would do:

Pulse Eng.: E2023
Bothhand: TS2023; LT1S023A; LT1T023C
Trans-power: HB624
BelFuse: S553-5999-F5

Have you looked at Digi-Key? I just ordered a couple of RJ45 sockets with
integrated magnetics from them and they didn't make a fuss. I don't know
if
they have the specific parts you're interested in, but I'd bet they have
something comparable.

Thanks,

Usually DigiKey is my first stop if I look for something. However this time
I wasn't successfull locating anything. Could you be more specific? What was
the part no. DigiKey no. for this socket?

The part I ordered is the Stewart Connector MagJack series SI without
LEDs, Digi-Key part numbers 380-1011-ND (with common mode choke) and
380-1077-ND (without choke). You can also get the MagJack with
integrated LEDs, but you pay about 3x as much. The MagJack without
LEDs is about $6.00 (US) in small quantities.

Also have a look in section M of the catalog to see if there are any
transformers that fit you requirements (I poked around, but didn't see
anything specifically targeted at Ethernet. Lots of ADSL and T1 stuff,
but I didn't really do an exhaustive search)

- Jeff Dutky

 

[Andras Tantos]

The part I ordered is the Stewart Connector MagJack series SI without
LEDs, Digi-Key part numbers 380-1011-ND (with common mode choke) and
380-1077-ND (without choke). You can also get the MagJack with
integrated LEDs, but you pay about 3x as much. The MagJack without
LEDs is about $6.00 (US) in small quantities.

Thanks,

Now, I've been able to find these connectors too. Unfortunately the turns
ration is not the one I need in any of these. :-(

Also have a look in section M of the catalog to see if there are any
transformers that fit you requirements (I poked around, but didn't see
anything specifically targeted at Ethernet. Lots of ADSL and T1 stuff,
but I didn't really do an exhaustive search)

I've looked but couldn't find anything...

Thanks again,
Andras Tantos