What To Do With Those 2SJ28's

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@ WBS and Diyers :xmasman:Greedy Boyz are not curious about knowing what surprises were inside ?
 

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Got curves?

Are they available?

How many are you going to send me?

😉

2SJ20 curves attached. From left to right Vgs = 10,9,8,7,6,5,4

I am thinking that this would be a good candidate for an inverted polarity J2 at lower voltage and lower current for use as a headphone amplifier. Maybe cascoded as well for low voltage high current operation?

I bought two to satisfy my curiosity and just bought a few more as spares for a one-off build.

If you want to see any other curves or data, just ask.

Transconductance looks to be less than a typical LATFET. I will do that curve next.
 

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