k170/j74 discontinued,what can instead it?
k366/107 or k246/j103 or k389/jxx
Buy them here.......
Resistors, Capacitors Artikel im AudioFET Shop bei eBay!
I think Zhoufang is still selling 2sk170/2sj74. Otherwise I would probably use 2sk246 2sj 103
I only have K170 on offer for now, no J74.
2SK246 and 2SJ103 are EOLed, in fact all Toshiba JFET were EOL last year except for a few SMT N-channel ones.
What the hell is going on with Toshiba.
They don't seem to be interested in Audio anymore at least from the point of view of manufacturing mosfets and jfets.
Luckily I have a tonne of 2sk170/2sj74.
And for output I have a tonne of IRFP240/9240, and a tonne of lateral mosfets.
Would have been nice to try out the toshiba devices though.
They don't seem to be interested in Audio anymore at least from the point of view of manufacturing mosfets and jfets.
Luckily I have a tonne of 2sk170/2sj74.
And for output I have a tonne of IRFP240/9240, and a tonne of lateral mosfets.
Would have been nice to try out the toshiba devices though.
What the hell is going on with Toshiba.
They don't seem to be interested in Audio anymore at least from the point of view of manufacturing mosfets and jfets.
Just not enough commercial interest in discretes these days. Commercial manufacturing is all about integration and IC packaging.....
our hobby musings bears no relevance in that market.... sigh....
@ 0.21g each that comes to ~2.38million of each..........I have a tonne of 2sk170/2sj74..........
Are you selling them by the hundred, or by the thousand?
How much for random selection of both types?
.....
I noticed Nelson is now using Toshiba power mosfets on his latest amps.
which ones ?
Xs-es ?
I'm not so sure , if you mean on Toshibas in output stage
as I understand it , Toshiba Jfets and Toshiba mosfets are situated in FE
Xs-es
Nelson now uses Toshiba.
Not sure what assumptions to make.
Initial assumption is that they are used on output. I am quite sure Nelson is using source follower on output. So I suppose it could also mean FE if he just means voltage gain.
"We continued to use cascoded NOS (New Old Stock) Toshiba Jfets that still set the standard for input devices, but for the heavy voltage lifting we switched to better Toshiba Mosfets (NOS, also discontinued)."
Nelson now uses Toshiba.
Not sure what assumptions to make.
Initial assumption is that they are used on output. I am quite sure Nelson is using source follower on output. So I suppose it could also mean FE if he just means voltage gain.
"We continued to use cascoded NOS (New Old Stock) Toshiba Jfets that still set the standard for input devices, but for the heavy voltage lifting we switched to better Toshiba Mosfets (NOS, also discontinued)."
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