Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Replacement For Toshiba 2SK170/2SJ74
Replacement For Toshiba 2SK170/2SJ74
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 23rd January 2019, 01:23 AM   #261
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Replacement For Toshiba 2SK170/2SJ74
for start ...... to replace 2SK/2SJ - you need 2SK/2SJ

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 23rd January 2019, 10:50 AM   #262
uchu007 is offline uchu007  France
diyAudio Member
 
Join Date: Feb 2016
Location: france
Okay ,
zenmod i understand this is not 2 complementary pair
  Reply With Quote
Old 14th March 2019, 04:03 AM   #263
meanie is online now meanie  Singapore
diyAudio Member
 
Join Date: Jul 2018
Location: Singapore
I have a batch of J74/K170 Jfets, initial testing with 10v supply shows IDSS= 3~5 mA range.
Are they good for any Pass amp here ?

Thanks
__________________
Marantz 7 clone(25 years old) - Baby Huey EL34s - BA3 Preamp - ACA - PassF6 - Whammy - USSA5.0(in progress) - M2X(in progress)
  Reply With Quote
Old 14th March 2019, 06:45 AM   #264
NicMac is offline NicMac  Italy
diyAudio Member
 
NicMac's Avatar
 
Join Date: Feb 2009
Replacement For Toshiba 2SK170/2SJ74
If they are BL-grade, they are almost certainly fakes and not recommended for use in Papa amps
  Reply With Quote
Old 14th March 2019, 07:17 AM   #265
Skylar88 is offline Skylar88  South Africa
diyAudio Member
 
Join Date: Jun 2017
Location: Pretoria
It may be GR grade, according to the datasheet.

IDSS classification:
GR: 2.6~6.5 mA
BL: 6.0~12 mA
V: 10~20 mA
  Reply With Quote
Old 14th March 2019, 08:15 AM   #266
NicMac is offline NicMac  Italy
diyAudio Member
 
NicMac's Avatar
 
Join Date: Feb 2009
Replacement For Toshiba 2SK170/2SJ74
The grade is indicated on the FET so no guesswork needed here.
Last year I did actually buy a couple of J74 GR-grade from what I thought was a reputable company (Reichelt), but as suspected they turned out to be fakes (way to low transconductance). They are still selling them (link).
  Reply With Quote
Old 14th March 2019, 09:18 AM   #267
carsten.witt is offline carsten.witt  Germany
diyAudio Member
 
carsten.witt's Avatar
 
Join Date: Jan 2006
Location: Berlin
Yes Reichelt has only fakes and I know many people that send measurements to R and they didn't react :-(
__________________
Regards ........Carsten
  Reply With Quote
Old 14th March 2019, 09:31 AM   #268
darrr is offline darrr  Poland
diyAudio Member
 
Join Date: Jan 2018
Location: Poland
Does anyone have experience with shopping in utsource?
  Reply With Quote
Old 14th March 2019, 09:43 AM   #269
TonyTecson is offline TonyTecson  Philippines
diyAudio Moderator
 
TonyTecson's Avatar
 
Join Date: May 2003
Location: Maybunga, Pasig City
Replacement For Toshiba 2SK170/2SJ74
Quote:
Originally Posted by darrr View Post
Does anyone have experience with shopping in utsource?
bad experience, i ordered IXYS depletion mosfets from them, IXYS parts did arrive, but they were enhancement mosfets, what it funny is that the markings are correct....
i even ordered from another source in china, same thing....
__________________
planet10 needs your help: Let's help Ruth and Dave...http://www.diyaudio.com/forums/plane...ml#post5010547[B
  Reply With Quote
Old 14th March 2019, 02:10 PM   #270
quyda is offline quyda  Viet Nam
diyAudio Member
 
Join Date: Feb 2005
Location: Hanoi
Quote:
Originally Posted by NicMac View Post
If they are BL-grade, they are almost certainly fakes and not recommended for use in Papa amps

Hi,
I'm about to purchase from this guy for my FW F5 project, are you telling me that they are likely fake too?
Anywhere reputable I can buy from, preferably Toshiba's
  Reply With Quote

Reply


Replacement For Toshiba 2SK170/2SJ74Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Toshiba 2SK170/2SJ74 FET's and other semis for sale duffears Vendor's Bazaar 63 6th December 2016 01:27 PM
Swapping matched for unmatched Toshiba 2SK170 / 2SJ74 Jfets NicMac Swap Meet 4 30th October 2016 06:16 PM
2SK170 2SJ74 F-5 BOM?????? paul stewart The diyAudio Store 5 19th July 2013 07:04 AM
FS 2sj74 and 2sk170's take 2 :) Woody1911a1 Swap Meet 43 28th August 2011 09:33 PM
2sk170, 2sj74 enzedone Parts 4 21st December 2008 05:38 AM


New To Site? Need Help?

All times are GMT. The time now is 02:25 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki