There's just something about bipolar junction transistors that I love.
Possibly because they're so easy to use in power applications controlled
directly from a 3.3V microcontroller pin.

I'm looking for a "jellybean" power BJT (preferably in a Darlington
configuration). Must be available and easy to acquire, decent price and
performance, and in a human-friendly through-hole package (TO-220 would
be great).

I was looking at the TIP122 earlier, hoping someone has a better suggestion=
..
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