low-noise sot-23 BJT transistors

Suggestions, anyone?

I've just finished sorting through my collection
of sot-23 BJT small-signal transistors, about
20 types, looking for a low-noise part. The
best I could find was mmbt5089 / pmbt6429,
which have curves showing a lowest e_n of
about 3.5nV. But this is much much worse
than the 0.4 to 0.8nV territory we're used to
with various classic TO-92 low-noise parts.

I am stocking Zetex fmmt618 and fmmt718
(npn - pnp transistors), which are large-die
high-current parts thought to have very low
r_bb' values. I purchased these thanks to
a suggestion by Fred Bartoli here last April.
But these do have rather high capacitance.
Ah, but then again, so do the famed 2sd786
and 2sb737, etc., from the old days.

.

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