Group Buy: Linear Systems LSK389 / LSK170 JFETs (i.e. Toshiba 2sk389/2sk170 subs)

[jonclancy]

SOIC?

Just for info, I was quoted the following for the SOIC 8 pieces back in March:

MOQ25 = GBP 2.35
100 = GBP 2.10
1000 = GBP 1.60

Plus GBP 15 postage plus 17.5% Tax

The TO-71 was between GBP 3.45 and 3.63 at MOQ.

Your prices look better than ours here in the UK!

I started work on an adapter board, but quickly got beached out of my skill puddle. If there is demand, I could have another go....

Cheers

Jon

 

[Dennis Hui]

what price if we hit 1000 of either?
do we have to hit 1000 of each grade?

I got a quote from Linear Systems a few days ago for the
B Idss parts:

LS170B-92, 1000pcs=$0.60ea, Delivery=stock to 6 weeks
LS389B-71, 1000pcs=$5.29ea, Delivery=stock to 6 weeks

 

[zapnspark]

Just an FYI.
You can get reasonably priced SOIC to DIP adaptors in the states at SPARKFUN.COM
Part SKU# BOB-00494
$2.95

ZAP

 

[luvdunhill]

Just an FYI.
You can get reasonably priced SOIC to DIP adaptors in the states at SPARKFUN.COM
Part SKU# BOB-00494
$2.95

ZAP

I think we'd be interested in SOIC to 7-Zip adapters.

 

[RogerGustavsson]

I am interested in:

LSK170A-TO92, 10 pcs
LSK170B-TO92, 10 pcs

LSK170A-SOIC 8, 10 pcs
LSK170B-SOIC 8, 10 pcs



Roger Gustavsson

 

[Conrad Hoffman]

I'm in for Q=25 of the LSK170-A in TO-92 @ $1.13 e.

 

[luvdunhill]

just so we're clear, I am not offering the SOIC version yet. Feel free to request them, but until we get to quantity 100, there's not much I can do for ya'll

 

[scott wurcer]

I'll help out Roger and take 100 LSK170 in SOIC and 10 LSK389. Are the Idss grades still open for choice? The middle or high would both be OK.

For those who care Quan-Tech data for recent samples:

2SK170 @1mA, gm - 11.3mS, noise @10Hz 2.5nV
LSK170 @1mA, gm - 10mS, noise @10Hz 2.3nV

 

[AndrewT]

any ideas why Linear are charging more for the low Idss version (Agrade) than the higher Idss grades?

More difficult/time consuming to make, or higher rejects, or lower yields?

 

[scott wurcer]

Probably just yield/demand balancing.

 

[luvdunhill]

I created a wiki page here:

http://www.diyaudio.com/wiki/index.php?page=Linear+Systems+LSK389+LSK170+JFETs+Group+Buy+

We will be allowed to mix-and-match Idss grades as long as we meet 100 quantity for that particular form factor. At this point we're "go" for the LSK389 (TO-71), LSK170 (TO-92) and LSK170 (SOT-23).

I'll reply later with more specifics.

 

[AndrewT]

If we can get the To92 down to $0.60, then I'm very interested, about 140 pieces.

Luvdun,
is your Email rejecting DIYaudio as spam?

 

[luvdunhill]

If we can get the To92 down to $0.60, then I'm very interested, about 140 pieces.

Luvdun,
is your Email rejecting DIYaudio as spam?

nah, just haven't replied to your e-mail.

I'm doubting we can get up to 1000 pieces. I just don't have the patience to draw out a group buy for months on end.

 

[AndrewT]

But, Scott and myself alone are looking at 240pieces.

 

[luvdunhill]

But, Scott and myself alone are looking at 240pieces.

two different packages though.

 

[AndrewT]

alright, 245+ is well short of 1000pieces.

 

[luvdunhill]

not to mention 145 is even shorter of 1000 pieces

 

[AndrewT]

Hi,
is any UK purchaser interested in buying matched pairs of LSK170 in A, B or C grade?
Can be either To92 or sot23
Just trying to get the numbers up to hit those 1000 prices

 

[luvdunhill]

Hi,
is any UK purchaser interested in buying matched pairs of LSK170 in A, B or C grade?
Can be either To92 or sot23
Just trying to get the numbers up to hit those 1000 prices

spread the word my friend!

 

[luvdunhill]

added more pricing info to the wiki....