If you are asking for LSK389 & LSK170, then you can find them here :
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LSK174 I have never heard of.
LSJ74 we have all been waiting since 2006, or even earlier ??
The manufacturer has been saying that they are available soon, since then.
Patrick
Linear Systems Ecommerce Site Powered by Micross Components
LSK174 I have never heard of.
LSJ74 we have all been waiting since 2006, or even earlier ??
The manufacturer has been saying that they are available soon, since then.
Patrick
yes, the LSJ74 is not in production.
I tried their LS312 and 318 which is supposed to be their direct replacement for the LM394. It was more like a matched pair BC550. I actually got better performance from a matched pair of 2N4401s.
The nice thing about the LS312/8 is that they come in a 'can' but that is it. You are better off spending a few minutes matching 2N4401 or BC550C and get better noise results.
I tried their LS312 and 318 which is supposed to be their direct replacement for the LM394. It was more like a matched pair BC550. I actually got better performance from a matched pair of 2N4401s.
The nice thing about the LS312/8 is that they come in a 'can' but that is it. You are better off spending a few minutes matching 2N4401 or BC550C and get better noise results.
bonsai
Yes! If you exchange the MAT, LM394 and 'real' equivalents in the same mic preamp and then put the LS318 in, the noise levels suddenly go right up.
Linear Systems technical will also tell you that the LS312/8 is not a direct replacement 'low noise' for the LM394 but will replace it in its footprint. I'm not sure what J Hardy is using in the JE990 now as the LM394 was discontinued a while back.
I learnt years ago that if you want clarification don't ask someone in a forum...ask the manufacturer.
Yes! If you exchange the MAT, LM394 and 'real' equivalents in the same mic preamp and then put the LS318 in, the noise levels suddenly go right up.
Linear Systems technical will also tell you that the LS312/8 is not a direct replacement 'low noise' for the LM394 but will replace it in its footprint. I'm not sure what J Hardy is using in the JE990 now as the LM394 was discontinued a while back.
I learnt years ago that if you want clarification don't ask someone in a forum...ask the manufacturer.
Salut, ai reusit până la urmă să găsești lsk 170 și 2sk170 în Europa?
Merci
Daniel
AmpsLab have 2SK170 and happily ship to Europe.
[Edit: as does jean-paul in Germany: https://www.diyaudio.com/forums/swap-meet/229532-fs-toshiba-jfets-2sk170bl-post5961672.html]
[Edit: as does jean-paul in Germany: https://www.diyaudio.com/forums/swap-meet/229532-fs-toshiba-jfets-2sk170bl-post5961672.html]
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Thanks Jeff!
I want to buy from an European seller because otherwise i have to go to the Customs Office in Bucharest in order to receive them. ~4 hours lost + customs duties.
the second link, (jean-paul from Germany) does not work for me, can you please check it to see if it is ok?
Cheers,
Daniel
LSK170 is available, see datasheet : http://www.linearsystems.com/lsdata/datasheets/201110 -LSK170 Rev A17 dated 2017 08 28.pdf
I have got LSK389 sample from CATS in France : Linear Systems
I have got LSK389 sample from CATS in France : Linear Systems
Thanks for your suggestions guys!
Unfortunately none worked out for me.
I've found this transistor,IFN5565 from InterFET, that i think will work for me .
I want to use it in a input differential stage of an amplifier.
My question is: do i really the low noise of a 2SK170/ LSK170 ( 0.8 nV/√Hz FET)?
Also, forward trans-conductance is about half but i think this will be just fine for me.
Unfortunately none worked out for me.
I've found this transistor,IFN5565 from InterFET, that i think will work for me .
I want to use it in a input differential stage of an amplifier.
My question is: do i really the low noise of a 2SK170/ LSK170 ( 0.8 nV/√Hz FET)?
Also, forward trans-conductance is about half but i think this will be just fine for me.
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