2sk150

burbeck · 16th February 2008, 04:08 PM

hi all,
has anyone got data sheet for this dual jfet?
pin out details at least

anyone sucessfuly substituted 2 jfet in place of one?

jacco vermeulen · 16th February 2008, 06:06 PM

Here you go, the DGS#SGD pinout is standard for this package type.

VDS=-50V, 2*0.2W,gm=12 mS typ.
Idss: Y=1-3,GR=2.6-6.5,BL=6-14mA.

burbeck · 16th February 2008, 11:47 PM

thanks jacco

tvi · 17th February 2008, 12:42 AM

Its in Japanese, hope it helps.

Regards
James

burbeck · 17th February 2008, 08:35 PM

thanks James

any one succesfuly substituted 2 jfets for this dual?

matching might be the main thing to consider.
it is used on power amp input diff any advice?

satoru · 11th March 2008, 09:32 PM

Quote:

Originally posted by burbeck
thanks James

any one succesfuly substituted 2 jfets for this dual?

matching might be the main thing to consider.
it is used on power amp input diff any advice?

2SK150 is a single chip JFET and has transconductance of ~8mS@1mA, ~12mS@2mA while maintaining low noise. Something comes close to this is two matched 2SK117 pasted together (of course, the drift would be worse). Toshiba lists 2SK389 as a substitute for 2SK150 but 2SK389 has higher transconductance so the frequency response would be different. Pasting together two matching 2SK170 is a good substitute for 2SK389 electronically (except for the drift). uPA63 or uPA68 are good substitute but I don't know where one can get them. Good luck!

Satoru

jacco vermeulen · 11th March 2008, 10:22 PM

.

burbeck · 11th March 2008, 11:40 PM

hi satoru,
thanks for the information, very useful

jacco nice pic

jacco vermeulen · 12th March 2008, 10:55 AM

Why not just order a 2SK150 for $6 from Mark5 ?

(more affordable than for those in need of a Mitsu/Pana 2SK109 dually)

jacco vermeulen · 12th March 2008, 11:31 AM

Just kidding, the K150 is less than $3 each at places like Grandata if you're not in the mood to fill Mark's pockets.
Some US stores list the SK150 as low as 1 dollar 50.(some folks don't get my cynicism)

Interesting amp, never seen a schematic with a K150 on the input, only as cascode devices for higher octane dual JFETs.

16th February 2008, 04:08 PM	#1
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	2sk150 hi all, has anyone got data sheet for this dual jfet? pin out details at least anyone sucessfuly substituted 2 jfet in place of one? __________________ regards bob

16th February 2008, 11:47 PM	#3
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	thanks jacco __________________ regards bob

17th February 2008, 08:35 PM	#5
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	thanks James any one succesfuly substituted 2 jfets for this dual? matching might be the main thing to consider. it is used on power amp input diff any advice? __________________ regards bob

11th March 2008, 11:40 PM	#8
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	hi satoru, thanks for the information, very useful jacco nice pic __________________ regards bob

12th March 2008, 10:55 AM	#9
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Why not just order a 2SK150 for $6 from Mark5 ? (more affordable than for those in need of a Mitsu/Pana 2SK109 dually) __________________ Looks like Sponge Bob has killed another thread.


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

12th March 2008, 11:31 AM	#10
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, just under Rotterdam	Just kidding, the K150 is less than $3 each at places like Grandata if you're not in the mood to fill Mark's pockets. Some US stores list the SK150 as low as 1 dollar 50.(some folks don't get my cynicism) Interesting amp, never seen a schematic with a K150 on the input, only as cascode devices for higher octane dual JFETs. __________________ Looks like Sponge Bob has killed another thread.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Want to buy: 2 x 2SK150 Dual N-Fet	yagoolar	Swap Meet	1	26th November 2004 01:31 PM
Wtb 2sk150 2sa818	Cephas	Swap Meet	0	14th May 2002 12:06 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read