LSK170A and LSJ74A both have Idss 2.5mA to 6mA.
They are thus equivalent to 2SK170GR and 2SJ74GR.
2SK170Y and 2SJ74Y, on the other hand, have Idss 1mA to 3mA.
As already discussed elsewhere, I shall always choose to use Toshiba originals.
https://www.diyaudio.com/community/threads/replacement-for-toshiba-2sk170-2sj74.317563/post-7278090
Patrick
They are thus equivalent to 2SK170GR and 2SJ74GR.
2SK170Y and 2SJ74Y, on the other hand, have Idss 1mA to 3mA.
As already discussed elsewhere, I shall always choose to use Toshiba originals.
https://www.diyaudio.com/community/threads/replacement-for-toshiba-2sk170-2sj74.317563/post-7278090
Patrick
which are not produced anymore...As already discussed elsewhere, I shall always choose to use Toshiba originals.
Fake are being relabeled, not manufactured.
Copies are being made by LS, but not quite the same as the originals.
If you look around and ignore those from China, you will find them.
A small premium of course, or you can always buy from LS.
I guess you need at least 25 each to get decent match quads (?).
https://www.diyaudio.com/community/threads/genuine-toshiba-transistors.395284/page-2#post-7263653
Patrick
Copies are being made by LS, but not quite the same as the originals.
If you look around and ignore those from China, you will find them.
A small premium of course, or you can always buy from LS.
I guess you need at least 25 each to get decent match quads (?).
https://www.diyaudio.com/community/threads/genuine-toshiba-transistors.395284/page-2#post-7263653
Patrick
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