Where can I purchase a high frequency step-up transformer

[yesbeckng]

I need a transformer with the following characteristics that can operate at a frequency of 1MHz.

Step-up ratio= 1:80
Primary L=1.55uH
Secondary L=10.65mH
Mutual Inductance= 62.5uH

Any suggestions on what US companies might carry this kind of product?

 

[berkeman]

I need a transformer with the following characteristics that can operate at a frequency of 1MHz.

Step-up ratio= 1:80
Primary L=1.55uH
Secondary L=10.65mH
Mutual Inductance= 62.5uH

Any suggestions on what US companies might carry this kind of product?

Welcome to the PF.

80:1 at 1MHz is potentially going to be difficult to achieve. Can you say something about the application? What is your target spec for Cww (winding-to-winding capacitance)?

 

[yesbeckng]

Welcome to the PF.

80:1 at 1MHz is potentially going to be difficult to achieve. Can you say something about the application? What is your target spec for Cww (winding-to-winding capacitance)?

Thank you berkeman,
I am trying to replicate a transformer in a paper for plasma generation. The paper describes the transformer as a 10mm diameter ferrite rod with 5(.3mm):400(.15mm) windings of copper wire.
Loss Resistance= 26 ohm
Self Capacitance=3.55pF

I've had no luck finding a ferrite rod with the right shape and size. Hardly any have been above 8mm in diameter, and none have been more than 25mm long, too short to fit the number of windings required. This is why I am trying to find an equivalent transformer.

 

[jim hardy]

is this guy's offering the right flavor?
Dimensions are English but .37 by 4 inch long is ~9.3 X 100 mm
http://www.bytemark.com/products/rod1.htm

http://www.cwsbytemark.com/index.php?main_page=index&cPath=206_216

All-Tronics appears to carry them in hobbyist quantities.

I think Ferroxcube makes them but i lost the link... see if this works
http://www.ferroxcube.com/prod/assets/rods.pdf

 

[yesbeckng]

is this guy's offering the right flavor?

I contacted this company about a week ago but never received a response. I called again and sent another email just now. It seems to be what I need, but I won't know for sure until I can talk with their engineers. I will keep the thread updated, and in the mean time I will continue to search for alternatives.

 

[jim hardy]

Newark carries the Ferroxcube and they'll answer their phone.

old jim