Which J-Fet ????

[ubaid88]

Hi,
I am looking for j201 substitute(s) for heavy distortion sound. I have read that bf245c is suitable alternative. Any suggestions ?

[CynicalMan]

Try it out with bf245c FETs, either on a breadboard or with sockets and see what happens!
Also, http://www.diyaudio.com/forums/parts/69082-can-i-replace-bf245c-jfet-j201-jfet.html

[mac]

No. BF245C has a higher Vgsoff than J201. They are similar to MPF102.
Try BF245A or 2SK117. 117s have lower Vgsoff than 201s and higher gain.
Look for Hitachi high gain & low Vgs fets.

mac

[caspercody]

I am looking for 2SK117, but Mouser, Small Bear or this store do not carry them. What is a good substitute for the 2SK117? I see Mouser carries the BF245A, is this a good substitute?

Thanks
Rob

[mac]

bf245a and j201 have similar gain, but j201 have a lower Vgsoff.

mac

[caspercody]

Do you have a data sheet on the 2SK117, that I might be able to get from you?

[CynicalMan]

Do you have a data sheet on the 2SK117, that I might be able to get from you?

http://www.datasheetcatalog.org/datasheet/toshiba/1025.pdf

[caspercody]

Thanks CynicalMan!

Now to find where to buy these..??

[mac]

mmhh... 2sk117 are common in my country unlike j201 and 2n5088.
it seems that  some parts are available in some regions and banned in others...

mac