Replacement For Toshiba 2SK170/2SJ74

Member
Joined 2009
Paid Member
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).
 
An externally hosted image should be here but it was not working when we last tested it.


An externally hosted image should be here but it was not working when we last tested it.


The J74 were too low to be listed in the BL grade, most likely fakes.
But the K170BL tested fine.... Here are the 50pcs samples, will probably order more of these. A few pair is almost perfect IDSS match !

Korg triode B1, here i come ...yeah !