very heavy J-fet

[kees52]

I found this!

little expensive but heavy 48 ampere 1200 volt j-fet.

http://semisouth.com/wp-content/uplo...045_rev1.3.pdf

high end audio

http://www.radiolocman.com/news/new.html?di=107175

[Bigun]

These devices have fairly high capacitance until they start seeing some significant voltage across them. However, if Nelson can make them sing, they are going to be popular.

[Zen Mod]

just send me some ......... and you'll never hear again for them

[homemodder]

Wonderfull devices for making outputstages, now if there was a complementary it would be even beter. Together with a medium to low power device it would be perfect for making great circuits.

[woody]

But where can we buy them and how much do they cost?

[kees52]

Farnell / Electronic Component Distributors / Suppliers / Electronics, Electrical Parts, Electrical Components and Wholesale Electronics. expensive if high amperage.

[CBS240]

Interesting. But expensive as new technology usually is. For now I will probably stick to my error correction vertical mosfet output stage. I used to be in the nice linear BJT camp but have discovered from experimentation and application that, IMO, despite being much simpler to use they are not the best output device. Perhaps in the end this technology will usher in an age of affordable and available power J-fets once again. We can all only hope.

[cfb]

For those of us in the USA seems like Newark will carry them at $86 each. Not in stock yet but the link to order is;
SEMISOUTH|SJDP120R045|JFET, SILICON CARBIDE (SiC), N | Newark.com

[kees52]

you mean error correction like mine hybride, I have not build it yet, but without feeback distortion is very low.

[kees52]

Originally Posted by cfb

For those of us in the USA seems like Newark will carry them at $86 each. Not in stock yet but the link to order is;
SEMISOUTH|SJDP120R045|JFET, SILICON CARBIDE (SiC), N | Newark.com

this is the audio version SJEP120R100A 17 ampere, cost in holland 17.40 euros
and the audio version SJEP120R063A 30 ampere cost in holland 35.70 euros.

in fact these jfets are not real jfets because of the forwarded vgs, but some kind of enhanced, but with low on viltage of max 1.25 volt, so it seems a little bjt like voltages (twice as high at highest) so very interesting for testing.