LSK170, matched pairs in the UK. - diyAudio
Go Back   Home > Forums > Commercial Sector > Swap Meet

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

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
Reply
 
Thread Tools Search this Thread
Old 2nd November 2008, 08:39 PM   #1
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Default LSK170, matched pairs in the UK.

Hi,
I have measured up and grouped a batch of LSK170 jFETs, the Linear Systems improved second source equivalent of the Toshiba 2sk170 low noise jFET

I have pair matched.

Pricing for UK buyers:
unmatched LSK170 . . . . . £0.35 each . . only grades A & C left
<10% matched pair . . . . .£0.45 each i.e. £0.90/pr. . . only grades A & C left
<5% matched pair . . . . . .£0.60 each . . only grades A & C left
<2% matched pair . . . . . .£0.80 each . . only grades A & C left
1% matched pair . . . . . . .£1.00 each . . a few B grade still available.
<1% supermatched pair .. £1.20 each.

They are available in A, B, C or C+ groups.
A = 2.6mA to 6.2mA Idss = pin compatible to 2sk170gr
B = 6mA to 10.5mA Idss = 2sk170bl . . Very few of the B grade left now.
C = 10mA to 20mA Idss = 2sk170v
C+ = 20mA to 29mA Idss ~= 2sk369v
The <1% supermatched pairs will be <=0.5% Idss AND <=1% current matched @ ~ 25% and ~50% of Idss at the SAME Vgs while in thermal contact.

Postage and PayPal fees extra.
__________________
regards Andrew T.

Last edited by AndrewT; 17th January 2012 at 07:41 PM.
  Reply With Quote
Old 19th November 2008, 04:05 PM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
C+, 20 to 30mA, are only available in:
<1% Idss @ £1.00 each
supermatched pair @ £1.20 each

All the cheaper ones went very quickly.
__________________
regards Andrew T.
  Reply With Quote
Old 1st October 2009, 09:08 AM   #3
diyAudio Member
 
Join Date: Jun 2003
Location: Surrey/Hampshire borders
Andrew,

Four pairs of the 1% please - what is the postage and how do I pay you?

Alan
  Reply With Quote
Old 1st October 2009, 08:23 PM   #4
grufti is offline grufti  United States
diyAudio Member
 
grufti's Avatar
 
Join Date: Jun 2004
Location: Hillside
Andrew,

I would like

8 pairs B @ <2% matched
2 pairs C+ @ <1% supermatched

Same questions as Alan.
  Reply With Quote
Old 2nd October 2009, 09:03 AM   #5
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
I bought from the Group Buy and effectively imported them from the US to the UK.
I can re-export back to the US, but you have odd Customs rules on letters and packages. It will cost a lot more.

I can use cheques or bank transfer for all UK transactions. That's why it's convenient having got them into the UK to keep them here.

I have found Paypal to work very well for foreign currency transactions.

I will do what the customer wants.
You just have to pay the bill.
__________________
regards Andrew T.
  Reply With Quote
Old 2nd October 2009, 09:39 AM   #6
diyAudio Member
 
Join Date: Jan 2007
Andrew, could I have a quote for:

8 supermatched pairs of Group-B jfets
24 unmatched Group-B jfets

..shipped to Greece and paid via Paypal?

Thanks in advance.
  Reply With Quote
Old 2nd October 2009, 10:39 AM   #7
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
please use the Private Mail system.
Don't clutter the thread.

I have sold hundreds in the previous 10months and not a single post shows in the thread.
__________________
regards Andrew T.
  Reply With Quote
Old 2nd October 2009, 10:47 AM   #8
diyAudio Member
 
Join Date: Jan 2007
We didn't mean to clutter your thread.
I guess it'd have helped if you made this clear in your first (or even third) post.
  Reply With Quote
Old 9th January 2012, 07:20 AM   #9
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Andrew,

I need 10 pairs of 2SK170BL with Idss >= 9mA for Mihai's RMI-FC100 AMP.
They will be used in the input differential.
They shall be 2% matched.

Do you need any further information?

Best regards - Rudi
  Reply With Quote
Old 9th January 2012, 08:13 AM   #10
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Andrew,

I found another hint in Mihai's thread:

The SK170 must have the same Idss>=9mA and must have the same Vgs +/- 1mV at Id=6.25mA.

Best regards - Rudi
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
WR125ST's - 2 x matched pairs mrpopgun Swap Meet 8 10th February 2007 05:42 PM
Two matched pairs of 2Sj49 MOSFETS (TO3) darkmoebius Swap Meet 0 14th July 2005 04:52 AM
EL84 matched pairs Indy335 Tubes / Valves 12 26th May 2005 09:03 AM
Two new 300B-matched pairs Djaki Swap Meet 1 4th June 2002 09:51 PM


New To Site? Need Help?

All times are GMT. The time now is 10:10 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2