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GB: for 2SK389 and 2SJ109 - Click HERE for Original Thread
A'af
Hi folks,

I got the supply of this rare components

2SK389BL/V and 2SJ109BL/V

but i must got for 1000 pieces, so i thought GROUP BUY is a must!

So pls list your order first, if we can reach the quantity, we will proceeding of this GB..

minimal quantity for order is 20 each, so we can faster to reach the quantity...

each are US$6

-paypal accepted
-shipping cost

if any other members of any region want to help me about this GB, pls mail me first....:)

to made this thread simple, pls put your order like this:

20 K and 20 J and so on...:rolleyes:

all the best,
a'af
h_a
Hi a'af!

If you strictly take only 20+ orders, I think not all that are interested will show up here, since the price for 20J and 20K is already quite some cash.

Personally I would be interested in

15 pcs 2SK389BL
15 pcs 2SJ109BL

All the best, Hannes
A'af
I'm flexible folks, nice starts... :D

all the best,
A'af
cocolino
Hi Juang,

I`d be in for 50 each 2SK389BL and 2SJ109BL and if possible also for 16 each 2SK389V and 2SJ109V.
quote:
If you strictly take only 20+ orders, I think not all that are interested will show up here, since the price for 20J and 20K is already quite some cash.

True, it`s quite some cash but these days the price is reasonable and this parts are almost impossible to get anymore in small quantities anywhere.
You`d have to buy several hundrets to get them to this price (supposed You can still get them at all).
It`s time to stock those parts up NOW, before they get as sought after and expensive as rare NOS tubes.
mlloyd1
i could go for at least 20 each of 2SK389V and 2SJ109V
or
2SK389BL and 2SJ109BL

but V grade is my preferred choice ...

mlloyd1
CeeVee
20 each ( 2SJ and 2SK ) please, count me in
HBarske
Count me in. 20 J, 20 K. BL preferred.
CeeVee
Yes BL of course
dw8083
I would want 40 2SK389BL and 50 2SJ109BL of each in the BL version.

-David
Ian Macmillan
I'd like 25 each of 2SK389V and 2SJ109V
or
2SK389BL and 2SJ109BL

but V grade is my preferred choice.

Ian.
ipolyakov
I would like to get 10 each of 2SK389BL and 2SJ109BL
si_jopie0382
Hi A'af,

Count me in for :

- 5 pcs 2SK389BL
- 5 pcs 2SJ109BL

If possible.....

Regards
Jopie

PS : minta no. Rek BCA nya donk!
A'af
Hi again,

I still count and hope we can reach the number sooner or fast as we can... :mad: :mad: :mad:

and i can buy asap... before their gone :( :( :(

if someone want to attached the data sheet here, thanks a lot, cause i dont know to put a single file in this forum :rolleyes: :rolleyes: :rolleyes:

i'll try my best,
A'af

:D :D :D

to si_jopie : ok, but 5 pieces?? :cool: :cool: :cool:
Zen Mod
.
Zen Mod
.
moamps
I would be in for:

2SJ109BL - 16 pcs.
2SK389V - 16 pcs.
2SJ109V - 16 pcs.

Regards,
Milan
Michi124
Hi a'af,

I'd like 25 each of 2SK389BL and 2SJ109BL.
Thanks for this nice offer!
sidiy
Hi,
I'm in for 12x 2SK389V and 12x 2SJ109V. The BL grade would be my second option.

Thanks for starting this GB!
luvdunhill
so, do you have to get 1000 of each grade? I'm interested, just trying to figure out how feasible this will be. :D
A'af
according to "overheard" this GB already 300 more count!! :grouphug:

all the best,
A'af
harryeng
Hi A'af,

Count me in for 30 pieces of each, BL preferred.

Greetings,
Harry
korben69
Hi A'af,

Do you trust your source, BTW are those original/guenuine parts...

If the answer is yes, count me in for :
- 10 pcs 2SK389BL
- 10 pcs 2SJ109BL

Let us know your opinion about this batch.
h_a
I forgot that I need more K389, so please let me correct my list (please forget the first one):

20 pcs 2SK389BL
15 pcs 2SJ109BL

All the best, Hannes

PS: is this a mixed grade group buy? So V and BL possible? If yes I would take some V's as well...
psroczka
I'm in for 10 pieces each
sandstorm33
20 each for me!!
Maousse
korben69, do we go together?
I'm in for :
6 2SK389BL
6 2SJ109BL
6 2SK389V
6 2SJ109V

Thanks
chumi
Hi,

I'm in for 8 x 2SK389V and 12 x 2SJ109V. The BL grade would be also my second option.
AndrewT
Hi,
what situations better suit BL or V grade?
Maousse
quote:
Originally posted by Maousse
korben69, do we go together?
I'm in for :
6 2SK389BL
6 2SJ109BL
6 2SK389V
6 2SJ109V

Thanks
I'm changing the quantities :
6 2SK389BL
6 2SJ109BL
10 2SK389V
8 2SJ109V

Still grouping the shipment with Korben69.

Thanks
WALTER BURKHARD
Hi a'af,

I'd like 32 each of 2SK389BL and 2SJ109BL.

Thanks Walter see you soon with some Bintang
Flemming J P
I am in for
10 2SK389V
10 2SJ109V
A'af
For to all candidate buyer, yes this parts is have GR/BL/V grade.
But i just sale one grade only!! if not BL then V grade for 1000 pieces, so seems no 2 grade/version here...
:rolleyes: :rolleyes:

For instance, if we have BL is just BL grade for 1000 pieces vice versa...

but we have another option!! if we can reach almost 2000 pieces, so we can mix the 2 grade for each 1000 pieces :)

Hope this can be understand quietly to all of you folks :smash:

all the best,
A'af
Maousse
quote:
Originally posted by Maousse

I'm changing the quantities :
6 2SK389BL
6 2SJ109BL
10 2SK389V
8 2SJ109V

Still grouping the shipment with Korben69.

Thanks
OK,

so understand :
2SK389BL (6)
2SJ109BL (6)
or
2SK389V (10)
2SJ109V (10)
A'af
Hi folks,

well... almost reach half the target... ;)

all the best,
A'af
genome
I would like to purchase
25 2SK389
25 2SJ109

Either BL or V grade is fine for me.
Thanks
JSMeier
I would need 10 pcs SK and 10 pcs SJ -BL if possible.
Thanks in advance!

Jan
Charles Hansen
To all of you who are wanting the BL grade instead of the V grade, don't be so picky. The V grade simply has a higher Idss rating. If you don't want to run at a higher current, simply use a larger value source resistor. Then you can make a V grade work exactly the same as a BL grade part. (The converse is obviously not true, which is why the GR grade is not very desirable.)

Just team up and get the V grade parts together. Production on these parts ceased over a year ago. When they are gone, they are gone. If you want some, get them now.

The only other choice is to get the K170/J74 pairs and hand-match them. They will never track quite as well as the monolithic duals, but they will track close enough for all practical purposes. It's just that then you have to spend time matching them.

The K170/J74 pairs are still in production. The monolithic duals were discontinued because the package is obsolete. I was hoping that Toshiba would make an SMT version of the monolithic duals, but they have not done so yet. Maybe if Sony or Pioneer (or Parasound!) places an order for a couple of hundred thousand they would do it.
moamps
quote:
Originally posted by Charles Hansen
The V grade simply has a higher Idss rating. If you don't want to run at a higher current, simply use a larger value source resistor. Then you can make a V grade work exactly the same as a BL grade part. (The converse is obviously not true, which is why the GR grade is not very desirable.)

I concur.
quote:
The only other choice is to get the K170/J74 pairs and hand-match them. They will never track quite as well as the monolithic duals, but they will track close enough for all practical purposes. It's just that then you have to spend time matching them.

True. A lot of work but the effort is worthwhile. Implementation results available here. ;)

Regards,
Milan
korben69
quote:
Originally posted by Maousse
korben69, do we go together?
I'm in for :
6 2SK389BL
6 2SJ109BL
6 2SK389V
6 2SJ109V

Thanks

Yes it's Ok Maousse, we join for this GB... but only in this case ! ;)
I'll need only BL grade, 10 pieces of each.
Thanks
Maousse
quote:
Originally posted by korben69


Yes it's Ok Maousse, we join for this GB... but only in this case ! ;)
I'll need only BL grade, 10 pieces of each.
Thanks
Hi Korben69

Quantities have changed :
2SK389BL (6)
2SJ109BL (6)
or
2SK389V (10)
2SJ109V (10)

It depends on what refs will be kept for the GB
jacco vermeulen
20 times 2SK389V, but ONLY Violet.
(i'll take more and also J109V if needed)

I'd listen and take the advice of Mr Hansen and Mr Curl, get V grades and get them now.
This may be the last opportunity you'll ever have, and you'll not get them at $6/pc ever again imho.

Added a piccy of a small batch of V grades from a source in Asea, the last V9 Interceptors i managed to find.
(Mr McMillan, your parts have arrived)
Ian Macmillan
quote:
Originally posted by jacco vermeulen
Added a piccy of a small batch of V grades from a source in Asea, the last V9 Interceptors i managed to find.
(Mr McMillan, your parts have arrived)

Great news - I'm getting all excited. The Aleph-X v2 will soon be another step closer towards a working prototype.

Ian.
matejS
Hi!

I'm in for 10x 2SK389V and 10x 2SJ109V. (If not V, then BL grade).

Thanks,
Matej
sernikus
count me in :

8 x 2sk389BL

8x 2 sj109BL
HBarske
Charles' words seem to have some wisdom. So I'd like to go for 20*J109V and 20*K389V instead of BLs.
cocolino
quote:
Charles' words seem to have some wisdom. So I'd like to go for 20*J109V and 20*K389V instead of BLs
ditto
If it helps to reach the 1000pcs. barrier I`d change to all "V"s as well.
luvdunhill
20 pcs 2SK389BL
10 pcs 2SJ109BL
gasolin
Hi,
I would like to purchase
12 pcs - 2SK389V
12 pcs - 2SJ109V

The BL grade would be also my second option.
Thanks
A'af
quote:
Originally posted by Charles Hansen
To all of you who are wanting the BL grade instead of the V grade, don't be so picky. The V grade simply has a higher Idss rating. If you don't want to run at a higher current, simply use a larger value source resistor. Then you can make a V grade work exactly the same as a BL grade part. (The converse is obviously not true, which is why the GR grade is not very desirable.)

Just team up and get the V grade parts together. Production on these parts ceased over a year ago. When they are gone, they are gone. If you want some, get them now.

The only other choice is to get the K170/J74 pairs and hand-match them. They will never track quite as well as the monolithic duals, but they will track close enough for all practical purposes. It's just that then you have to spend time matching them.

The K170/J74 pairs are still in production. The monolithic duals were discontinued because the package is obsolete. I was hoping that Toshiba would make an SMT version of the monolithic duals, but they have not done so yet. Maybe if Sony or Pioneer (or Parasound!) places an order for a couple of hundred thousand they would do it.


Thanks for the bright explanation Mr.Hansen, so seems we preffered V "version" here :devilr: :devilr:

all the best,
A'af
DanielRi
I would be interessted in

15 pcs 2SK389BL

Thanks,

Daniel
Westley
Hi Juang,

Please put me down for:

30 2SK389V

20 2SJ109V

If V not available, I will take BL.

Thanks,

Rick
A'af
Ok Rick, thanks :D

to Mr. Hansen, when you wanna put your order? :cool:

come on folks, help this GB success :smash:

all the best,
A'af

PS: still count, count, count.... :devilr:
cocolino
quote:
to Mr. Hansen, when you wanna put your order?
Mr. Hansen for sure was smarter as we all and has stocked up a lifetime supply of this parts long ago when they where still avaiable for 50 cents or so.
sandstorm33
quote:
Originally posted by cocolino

Mr. Hansen for sure was smarter as we all and has stocked up a lifetime supply of this parts long ago when they where still avaiable for 50 cents or so.


Just want to clarify tentative pricing! How many do I get for 6USD????
HBarske
quote:
How many do I get for 6USD????
One. Uno. Un. Einen....
s.oliver
Hello A'af,

I'd like 10 2SK389V and 10 2SJ109V.

Thank you,

Oliver
macka
Hi Juang,

Count me in for :

2SJ109BL - 20 pcs.
2SK389V - 20 pcs.
2SJ109V - 20 pcs.


Regards,

Ian
ticknpop
I'm in for 30 sk389V
and 40 of 2 sj109V
Tony
Count me in please for:

2SK389V - 10 pcs.
2SJ109V - 10 pcs
Maousse
So this will be V type.

How is the count, actually?
stoolpigeon
If these are genuine parts I would like 10 of each in V grade.

Thanks
A'af
quote:
Originally posted by Maousse
So this will be V type.

How is the count, actually?

It seems we will go to "V" version. Until now, we reach under 700 pieces (actualy 663)

quote:
Originally posted by stoolpigeon
If these are genuine parts I would like 10 of each in V grade.

Thanks

Yes they are original as they are! TOSHIBA NOS UNUSED :bigeyes: :bigeyes:

all the best,
A'af
stoolpigeon
thank you A'af.

If the numbers aren't quite enough I may go for another 10 of each.

SP
Charles Hansen
quote:
Originally posted by cocolino
Mr. Hansen for sure was smarter as we all and has stocked up a lifetime supply of this parts long ago when they where still avaiable for 50 cents or so.

When they were still in production, we paid around $2 each for them in quantities of 1000 or so. When we heard they were stopping production, we bought 20,000 of each. This brought the price down to around $1 each, but was obviously a considerable investment. This was compounded by the fact that they were also discontinuing the A1349 and C3381 (same packaging issues). So we spent about $80,000 to get a 10 or 20 year supply.

Hopefully someone will come out with a replacement before we run out.

We have always used the BL parts as availability of the V parts was not as reliable. However, the V parts are preferable in every application I can think of. I would get them now while you can. The asking price is quite reasonable considering the situation. Linear Systems is advertising an equivalent for the K389, but nothing regarding a complementary device.
GRollins
Linear Systems is having production problems with their P-ch product. The last time I was in contact, they were having yield issues. They are well aware that there is pent-up demand for P-ch devices and are doing their best to meet that demand.
When remains to be seen.

Grey
Charles Hansen
quote:
Originally posted by GRollins
Linear Systems is having production problems with their P-ch product.

Well, I've been waiting for close to 15 years for either them or InterFET to make any sort of true complement. I'll believe it when I see it. In the meantime we still have tens of thousands of the Toshiba parts.

The one that I wished we hadn't missed out on were the NEC FETs, the J44 and K163. In some ways these were even better than the Toshiba parts. And Hitachi made some parts that were even quieter than the long-discontinued J72 / K147 Toshibas.

And I think that John Curl has some other parts that never even made it to production. But at least with the existing J74 / K170 and J103 / K246 Toshiba pairs, some excellent circuits can be built.
gary s
Hello A'af

I would like the following, thanks.

20 pcs - 2SJ109V
20 pcs - 2SK389V

Regards

Gary
AndrewT
Hi,
20 off each J&K Vgrade.
A'af
Others??? :smash:

all the best,
a'af
cviller
I'll take:

24 pcs - 2SJ109V
24 pcs - 2SK389V

:D
ampliton
Hi Juang,

Count me in for :

40 pcs 2SJ109V
40 pcs 2SK389V

Thanks!

Adam
A'af
Hi again folks,

Actually we already reached 713 pieces, perhaps more in the near time, if we still can not reach 1000 pieces request, i hope we can still go on, but the price is raise a little to US$6.5 each, really i must buy a whole box content of 1000 pieces and the other BOX total is 2000 pieces for both of them.

payment must collect it firstly (and this takes times folks) paypal (PP fee 3%) preffered or via money bank transfer (mail me for further info about this, and the bank charge is on you)

CAUTION : for credit card buyer, must added 3% more for surcharge fee

according to Mr. Hansen, we agreed to the "V" version, so all 2sk389 and 2sj109 is "V" :smash:

shiping and handling is via registered mail and this cost US$6 worldwide until 100 grams

Hope we are all here understand the situation, and goodluck to all of you with this rare parts!! :smash:

dont hesitate to mail me to asking any... will answer properly, but your patient and kindness is a must to me!! :cool:

all the best,
a'af
A'af
WOW after i post... now we already reached 777 pieces!!

I love internet!!

all the best,
a'af
A'af
oops... forgot to tell you paypal buyer, dont forget to make a notes: ptbambich and your postal address, thanks.

anyway for now, i dont collect money, until i let you know "payment times" :smash:

all the best,
a'af

PS: hope we can reached 1000 before mid or end november!! :devilr:
A'af
I'm a little suspicious... me is a'af, but why so many here call me "Juang"?? :D :D

all the best,
a'af
Tony
hi,

plaase modify my order to:

20 pcs 2SJ109V
20 pcs 2SK389V


can i make payements via western union?

thanks

tony
AndrewT
Hi A',
you'll need to buy lots of conductive bags to send them out.
Would be nice if the N & P parts are separately bagged to save excessive handling at our end.
Allow something in your costs, say 3.2% uplift instead of just the 3% paypal fee.
Maousse
OK, so with that S&C charge, I split from Korben69 and order by my own.

And I increase quantities to :
2SK389V (14)
2SJ109V (12)

BTW, I agree with AndrewT for seperate antistatic bags, and the surcharge.

I'll pay by Paypal when asked for payment.
I'm not in a hurry, so I can wait for the 1000 limit to be reached ;)

Cheers,
Trung
Cambe
Hello,
I would be interested in 20 each of the 2SK389V and 2SJ109V.
Cambe:cool:
sandstorm33
quote:
Originally posted by sandstorm33
20 each for me!!


Please alter my request to 10 (ten) each. Poverty is the one thing money cant buy!!!
Charles Hansen
quote:
Originally posted by AndrewT
you'll need to buy lots of conductive bags to send them out.

Unlike MOSFET's, JFET's are not static-sensitive. So while it wouldn't hurt to use static-sensitive bags, it's not really necessary. We've been using them for 12 years and I can't recall ever damaging one with a static discharge.
AndrewT
Hi Charles,
that's good news.
Thanks for looking after our interest.
hifiZen
OK, I'm in for 12 each of the 389V and 109V.

Charles is right, JFETs are quite robust. I store my sorted parts in ordinary plastic organizer trays.

OTOH, I think static protection is worthwhile, if for no other reason than just to establish and maintain good habits. And, ESD does not always result in total failure, it sometimes results in just a subtle performance degradation of the part... Also, I just don't trust the post office. I have nightmares about precious parts running through those automatic mail sorting machines, with some big rubber belt (aka van de graaf generator) zipping each envelope along. Call me paranoid, but for shipping precious cargo like these fets, I'd rather be safe than sorry.

If it's down to cost, I will often wrap things in aluminum foil from the kitchen instead of a proper static bag. Works just as well if not better, and it's cheap!
A'af
Hi again,

Still counted, some member more request, some less but we already reached 800 more pieces :smash:

About the payment, any way of payment is ok, T/T in advance, paypal, instant transfer (western union or moneygram) at least not "extra" works for me or pay like usual, perhaps walter wanna do that in jakarta :D

Many thanks to a lots of expertise advices from Mr. Charles Hansen :) :) :)

To AndrewT: perhaps a 3,2% uplift is nice to me :D yes needs an extra energy to do GB, especially to 2000 pieces!! :rolleyes: but we will see later, is it OK DIY'er? :)

To Maousse: pls list once more, how many pieces do you needs, i'm a little confuse :D

To hifiZen: alumunium foil task is already in my head :rolleyes: yes but for sure, i already send many chips worldwide, but just a little complain about packing and shipping, hope this too thanks to remind me ;)

To others: i dont know if i can get another batch, but for this 1000 pieces of both, i already reserved it, we are here already reached 800 pieces, 200 pieces is not much for this rare parts, so if later i said i dont have it more, sorry this over. even now i forgot to reserve for myself!! :mad: :mad: :mad:

anyway pls take a look for my sale of nice parts here :cool:

http://www.diyaudio.com/forums/show...threadid=105354

and here

http://www.diyaudio.com/forums/show...threadid=101148

perhaps if dont much, shipping cost with this JFET buyer is FREE!! ;)

goodluck to you all!! :)

all the best,
a'af
Zen Mod
quote:
Originally posted by A'af
.................
anyway pls take a look for my sale of nice parts here :cool:

http://www.diyaudio.com/forums/show...threadid=105354
.................


now you confuses me ..........

you aren't Ruach ........ ?

or you are ?

:confused:
A'af
sorry Zen Mod, wrong pasted i already fixed it :D me is a'af :)

all the best,
a'af
Maousse
quote:
Originally posted by A'af
Hi again,

.../...
To Maousse: pls list once more, how many pieces do you needs, i'm a little confuse :D
.../...

all the best,
a'af
Hi A'af

To make it short, I need :
2SK389V (14)
2SJ109V (12)

Thanks
Maousse
Hi A'af

Sorry, I change again, total quantities are :
2SK389V (18)
2SJ109V (16)

Thanks
AndrewT
quote:
Originally posted by Maousse
Hi A'af

Sorry, I change again, total quantities are :
2SK389V (18)
2SJ109V (16)

Thanks
The original invite to join this group buy was for quantities of 20 off each/either.
Most seem to have forgotten that.
moamps
quote:
Originally posted by AndrewT
Most seem to have forgotten that.

No. A'af is a flexible guy.

http://www.diyaudio.com/forums/show...554#post1325554

Regards,
Milan
A'af
Its time to change your order, only V version available to both of them, i count its all V version if not any info, no GR, no BL version! ;)

I'm flexible, i start it with 20 to accelerate this group buy to 1000 :D

all the best,
a'af
Ian Macmillan
Presumably those of us who originally asked for V type don't need to revise our orders?

Ian.
moamps
quote:
Originally posted by moamps
I would be in for:

2SJ109BL - 16 pcs.
2SK389V - 16 pcs.
2SJ109V - 16 pcs.

Regards,
Milan


As we have definitely opted for the V type, I'm updating my order accordingly:

2SK389V - 20 pcs.
2SJ109V - 20 pcs.

Regards,
Milan
tadek
Hi A'af,

2SK389V 40pcs.
2SJ109V 40pcs.

for me please.

thanks

tadek
TLJ
Hi A'af

Count me in for:
- 20 pcs 2SK389V
- 20 pcs 2SJ109V

Regards

TLJ
SvErD
Hi A'af

Count me in for:

- 10 pcs 2SJ109V

Regards

S
Markus
Hi A'af

Count me in for
- 20 pcs 2SJ109V

Regards
Markus
jeffry_widjaja
quote:
Originally posted by A'af
I'm a little suspicious... me is a'af, but why so many here call me "Juang"?? :D :D

all the best,
a'af


Dear All Audio Master
in DIYAudio Forum

2SK389V & 2SJ109V can replace what FET ?
Is it can change irf9610 and irf610 ?

please give me info about this, thank you
jacco vermeulen
quote:
Originally posted by jeffry_widjaja
can replace what FET ?

Jeffry,

this is a group buy thread, not an endless theoretical arguement class on JFET devices.
Waste a lot of time on elementary JFET info and Idss basics and this might turn into a missed train ride.
Just listen to the wiseguy geezers and place an order, only bare in mind that folded cascode stuff requires buying a substantial number.

These dual JFETs can replace other (older dual) JFETs in some cases, but not always.
A JFET does not replace any FET, it's a totally different animal alltogether.
And it certainly does not replace devices with a hundred times higher power dissipation level.
With an easy search at diyA you can find lots of JFET basics, you can even download entire books on (dual) JFETs from the web.
I've been assembling dual JFET circuits for decades, i'll be happy to tell you everything you like to know about them and i'm sure other more prominent ones are too.
But it's much more rational and efficient if you do that somewhere else, not at this thread.

Folks and fellow turds, i've got more and more exotic dual JFETs than most of you will ever see in your life.
A'af not Juang is very pleasant to deal with and V grades are a Bitz to find, don't ponder too much and get them fast/rapide/schnell/rapido/pesat.
spind
Hi A'af

I'll take
- 10 pcs 2SK389V
- 10 pcs 2SJ109V

Thanks,
Steve.

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