I have got just over 230 of each 2sk170 and 2sj74 unused jfets left over from previous projects.
They have all been initially measured for Idss at 10v and are BL version so there is a spread from around 6.5mA to 11.5mA.
To start with I will only supply NNNN-PPPP (4 x K170 and 4 x J74 matched sets). When these run out I will go to NNN-PPP then NN-PP then N-P. N-N and P-P sets may follow.
They will be remeasured (to reduce temperature, supply voltage and instrument drifts) and set matched using a meter with 1uA resolution, you can request;
Tolerance
Vds*
Preferred Idss
*The Vds of the specific circuit they will be used in will affect matching tolerance given the different transconductance curves of individual devices (a 2% match at 10Vds certainly doesn't guarantee a 2% match at 5Vds or 20Vds).
As supplies dwindle request options will be removed but I can then give more detail for the remaining jfets.
If you PM me with requirements I will let you know what I can supply and cost. Actual measured values will be given for each jfet of the set prior to purchase.
They have all been initially measured for Idss at 10v and are BL version so there is a spread from around 6.5mA to 11.5mA.



To start with I will only supply NNNN-PPPP (4 x K170 and 4 x J74 matched sets). When these run out I will go to NNN-PPP then NN-PP then N-P. N-N and P-P sets may follow.
They will be remeasured (to reduce temperature, supply voltage and instrument drifts) and set matched using a meter with 1uA resolution, you can request;
Tolerance
Vds*
Preferred Idss
*The Vds of the specific circuit they will be used in will affect matching tolerance given the different transconductance curves of individual devices (a 2% match at 10Vds certainly doesn't guarantee a 2% match at 5Vds or 20Vds).
As supplies dwindle request options will be removed but I can then give more detail for the remaining jfets.
If you PM me with requirements I will let you know what I can supply and cost. Actual measured values will be given for each jfet of the set prior to purchase.