2sk389 and 2sj109 -where

sparkle · 2nd July 2009, 09:43 PM

Hi guys,
is there anybody that can tell me where to find 2sk389 and 2sj109 double transistors - originals please....
thanks
best regards
daniel

coloradosound · 2nd July 2009, 10:10 PM

Those are discontinued Toshiba devices.
Linear Systems has an LSK389 for the N-channel
as a supposedly better replacement but no P-channel
device as of yet. If I recall from another thread for a GB
we did last year, I think there was discussion on the pinout
being somewhat different on the dual device?

coloradosound · 2nd July 2009, 10:14 PM

luvdunhill did that GB last year.
You may want to try contacting Marc (luvdunhill)
Thread is:
Group Buy: Linear Systems LSK389 / LSK170 JFETs (i.e. Toshiba 2sk389/2sk170 subs)

mlloyd1 · 2nd July 2009, 10:26 PM

one possibility for (NOS) 2SK389:
here

looks to be GR only, if that matters to you.

for 2SJ109, i wish you best of luck!

mlloyd1

sparkle · 3rd July 2009, 04:59 AM

yes i know - it is a really big problem with 2sj109... even i have 2 2sk389 at my home - but no 2sj109...
a friend needs both of them and i need only a P pair....

so, 2pieces of 2sk389 and 4 pieces of 2sj109......will be a problem - i will try to contact Marc..thnx...

sparkle · 3rd July 2009, 05:07 AM

any other ideas would be also welcome....

CraigBuckingham · 3rd July 2009, 05:15 AM

I have some in stock.

USD$20 ea + posting.

Brand new and unused of course.

jacco vermeulen · 3rd July 2009, 06:32 AM

Quote:

Originally posted by sparkle
any other ideas would be also welcome....

Scroll down the thread Mlloyd posted till where i posted a link to Partco in Finland.
They only have GR's in stock, but charge €5 for a pair of 2SJ109/2SK389-GR

If you need BL's i'd go for J74/K170 single JFETs, a matched pair mounted to a small heatsink is close as good as a monolythic duo.

sparkle · 3rd July 2009, 10:03 PM

o.k. - i will go for that option jacco since i have a good source (cheap and close) for k170/j74...

craig - thanks for offer - it is a good one but i decided to go with a 2sk170/2sj74 combo since i can find a good and reliable source of them very close to me....
thanks man!!

2nd July 2009, 09:43 PM	#1
sparkle diyAudio Member Join Date: Oct 2003 Location: middle of nowhere...	2sk389 and 2sj109 -where Hi guys, is there anybody that can tell me where to find 2sk389 and 2sj109 double transistors - originals please.... thanks best regards daniel

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2nd July 2009, 10:10 PM	#2
coloradosound diyAudio Member Join Date: Nov 2005 Location: colorado	Those are discontinued Toshiba devices. Linear Systems has an LSK389 for the N-channel as a supposedly better replacement but no P-channel device as of yet. If I recall from another thread for a GB we did last year, I think there was discussion on the pinout being somewhat different on the dual device?

2nd July 2009, 10:14 PM	#3
coloradosound diyAudio Member Join Date: Nov 2005 Location: colorado	luvdunhill did that GB last year. You may want to try contacting Marc (luvdunhill) Thread is: Group Buy: Linear Systems LSK389 / LSK170 JFETs (i.e. Toshiba 2sk389/2sk170 subs)

2nd July 2009, 10:26 PM	#4
mlloyd1 diyAudio Member Join Date: Feb 2001 Location: illinois	one possibility for (NOS) 2SK389: here looks to be GR only, if that matters to you. for 2SJ109, i wish you best of luck! mlloyd1

3rd July 2009, 04:59 AM	#5
sparkle diyAudio Member Join Date: Oct 2003 Location: middle of nowhere...	yes i know - it is a really big problem with 2sj109... even i have 2 2sk389 at my home - but no 2sj109... a friend needs both of them and i need only a P pair.... so, 2pieces of 2sk389 and 4 pieces of 2sj109......will be a problem - i will try to contact Marc..thnx...

3rd July 2009, 05:07 AM	#6
sparkle diyAudio Member Join Date: Oct 2003 Location: middle of nowhere...	any other ideas would be also welcome....

3rd July 2009, 05:15 AM	#7
CraigBuckingham diyAudio Member Join Date: Dec 2002 Location: Sydney, Australia	I have some in stock. USD$20 ea + posting. Brand new and unused of course.

3rd July 2009, 10:03 PM	#9
sparkle diyAudio Member Join Date: Oct 2003 Location: middle of nowhere...	o.k. - i will go for that option jacco since i have a good source (cheap and close) for k170/j74... craig - thanks for offer - it is a good one but i decided to go with a 2sk170/2sj74 combo since i can find a good and reliable source of them very close to me.... thanks man!!

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