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Isolation transformator/Source needed

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dsp_

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In our project a 1:2.5 Isolation transformer is needed for ethernet applications.
Our problem is that this part is hardly available in small quantities(1-2) in europe/austria.
We look either for a RJ-45 with integrated isolation transformer or for an external.

I also thought of using one from a network card but they generally use 5 volt as supply voltage leading to 1:sqrt(2) transformators. JFYI: We use 3.3V

Could anybody suggest a vendor or distibutor or any other source?

Thanks very much in advance
dsp_
 

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