I've come across old synthesizer schematics for an oscillator which makes use of a couple E402s. I am looking for a suitable replacement, and I don't think the specs have to be spot on at all, but I still want "professional" advice.
The source gets between 5 and 10 volts, the drain delivers that voltage minus whatever drop across the JFET, and the gate gets 5 volts so the circuit isn't very demanding. If you need more info I'll gladly add it since I have no clue what info you need to find a replacement.
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The 'E402' is an N-channel JFET pair in a single package. 2N3954 was its replacment, but not easy to find.
More here: http://analogue-heaven.1065350.n5.nabble.com/Moog-2N3958-replacing-E402-td29183.html
A few candidates:
NTE NTE461
From Linear Systems, LS3954
On Mouser, 2N3954: It's $23. Ouch.
answered Apr 10, 2020 at 4:16
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\$\begingroup\$ Yeah, I just want super cheap but still functional JFETS since I'm selling these and trying to keep manufacturing costs low (and I don't want to deplete the worlds supply of these things lol) so I will research if these JFETS need to be electrically matched. I think they do. \$\endgroup\$– zvolk4Apr 10, 2020 at 17:01