Nein

[johnk_10]

Did you find anything out?

not yet. i'll have to re-visit my build .

 

[Matopotato]

Just got hold of a tester, but I am not quite sure what I should be matching with regards to the J201's?
Exactly the same values as @Robert would have been great, but my collection did not match anything exactly.
So are there any other values to focus on?
Or values that should be similar, or as close as possible?

Below are my values and my first attempt at selection base on Idss as close to each other as I can get.

Q1 NEIN Fuzz
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,59V at Id=5,0µA
Vgs(on)=0,42V at Id=1,22mA
gfs=1,9mA/V at Id=0,7mA to 1,2mA
Idss=0,47mA at Vds=3,01V
Rds(on)=581,0Ω at Id=1,2mA and Vgs=0,0V


Q2 NEIN Fuzz
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,55V at Id=5,1µA
Vgs(on)=0,42V at Id=1,14mA
gfs=1,9mA/V at Id=0,7mA to 1,1mA
Idss=0,41mA at Vds=3,00V
Rds(on)=598,8Ω at Id=1,1mA and Vgs=0,0V

Q3 NEIN Fuzz
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,57V at Id=5,2µA
Vgs(on)=0,42V at Id=1,16mA
gfs=1,9mA/V at Id=0,7mA to 1,2mA
Idss=0,44mA at Vds=3,00V
Rds(on)=591,6Ω at Id=1,2mA and Vgs=0,0V

Q4
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,47V at Id=5,1µA
Vgs(on)=0,44V at Id=1,03mA
gfs=1,8mA/V at Id=0,6mA to 1,0mA
Idss=0,31mA at Vds=3,01V
Rds(on)=627,9Ω at Id=1,0mA and Vgs=0,0V

Q5
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,38V at Id=5,0µA
Vgs(on)=0,45V at Id=0,90mA
gfs=1,8mA/V at Id=0,5mA to 0,9mA
Idss=0,22mA at Vds=3,01V
Rds(on)=634,9Ω at Id=0,9mA and Vgs=0,0V

Q6
N-Ch JFET
Green-G, Symmetrical Src/Drn
Vgs(off)=-0,46V at Id=5,3µA
Vgs(on)=0,44V at Id=1,01mA
gfs=1,8mA/V at Id=0,6mA to 1,0mA
Idss=0,31mA at Vds=3,01V
Rds(on)=623,6Ω at Id=1,0mA and Vgs=0,0V