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Jellybean hobbyist general purpose transistors..
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Vtile:
I have started to think that I stock a few hundred
 general purpose through hole transistors (an investment of a few tens of bucks). To be sure I will have them to tinker around as to me it seems that the jellybean variety is vanishing or vanished already from THTs.

I'm mostly thinking of small signal, low freq (<200MHz), throw in buffer etc. general purpose uses of tinkering and maybe slobby repair or hack here and there.

BJTs:
BC547B(npn) & BC557B(pnp) comes to my mind.
Is there other worth to look that are still readily available.
Darlington models to maybe look at?
.
JFET
Is there cheapish (<$0.50 ) replacement for 2n4117 other than mbf4117(smd). It seems to be pretty alone in fart detector range.

MOSFET
For logic level switching use. Any ideas, in leds/signals on/off range of power. Should be also as robust as possible for ESD and ideally should have the protective diodes. 2N7000 ?? or were it JFET&BJT hybrid, hmm.

Known matched pairs (for that random differential stage) that wouldn't cost arms and legs and could still be found as THTs.    ..none or should I look from IC listings..

Any other than TO-92 cases to look at for jellybean THT parts. Metal cans seems to be premium only now.
rstofer:
2N2222A
2N3904,5,6
Cerebus:
BJTs: There's always the old 2N3904 and 2N3906, widely available, cheap as chips, both quite quiet (NPN 1.8 nV/sqrt(Hz)), easy to get through hole and SMD versions, 300 MHz Ft.

JFETs: In the low leakage JFET arena, nope nothing cheap. As you say, MMBF4117 is widely available at low cost but that's about it. PN4117 can be had in TO-92 but expect to pay around £1.50-£2 GBP each in small quantities. 2N4117A is also still available at similar prices. Both from Linear Systems.

And if Sir needs to ask the price of dual monolithic JFETs then Sir might find them to be *ahem* beyond his budget. I'm seriously considering a bulk purchase of some dual JFETs and laying them down, like a fine port, for the next generation.

J113 in most packages and PN/MMBF4393 in most packages are easy to find and inexpensive. Both good switches and fair amplifiers up to VHF at least.

MOSFETS: BS170 is my go to for a discrete, breadboardable N-Channel MOSFET in TO-92. BS250 for a roughly complementary P-Channel. If you can find a small signal discrete MOSFET with a separate substrate terminal (so you can dodge the body diode problem) in current production at sane prices, I want to know about it.
T3sl4co1l:
FWIW, low leakage parts aren't jellybean, it's kind of contradictory there. :P

I go with:
2N3904/6, 4401/3 for more current, and PBSS303NX/PX for even more.  Change 2N/MMBT when SMT.

Lower current, and faster: MMBTH10/81, BFR92A (though this exact one I think is obsolete now, so pick another similar part instead).

Higher power: TIP31C/32C, 2SD1273 (hah, not jellybean at all, but I picked up a few before they went obsolete), MJE15020, FJPF13009 (high voltage)

MOSFETs:
2N7002, BSS84
NDT3055L
IRF510, 540, 640, etc.
IRFZ46N
STP6N60M2
etc.

I rarely use JFETs, but I've picked '4393, '5486, J105, and such before.  Others (who are actually experienced with low noise wideband design) are very fond of BF862 (which is now going obsolete, but there are newer equivalents from On Semi).

Tim
JustSquareEnough:
while may not always hold true i've found it helpful to learn what the "jelly bean" part # of a particular component is by going to mouser or digikey, go to the components category, sort by either lowest price OR stock on hand.  doing this on the BJT will see 390x that were mentioned already at the top of the list.

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