What can i do with fake J201 and 2N5457's?

[pinkjimiphoton]

hook 'em up to your breadboard with a variac, and juice 'em as a sacrifice til the magick smoke goes out to the mojo gods.

[rankot]

I have recently bought few MMBFJ201 JFETs, I_dss is around 0.4mA, V_gs(off) is around 0.3V (lowest part of specs), measured with GM328A transistor tester (which gives slightly lower values than ROG measurement method). Any ideas what to do with them?

[edvard]

Even the most out-of-spec JFETs can make wonderful buffers. Wire them up as a source-follower and put front-and-center as a high-impedance front end, driving a tone stack, following a high output-impedance gainstage, or at the tail end driving a 10K volume pot. Basically anywhere you'd normally put an op-amp non-inverting buffer and gain wasn't a primary concern.