Hello Jorgen,

Jorgen Lund-Nielsen wrote:



Winfried Salomon wrote:

Hello Jorgen,

Jorgen Lund-Nielsen wrote:

[.....]

2N2369 for fast pulses.



btw, do you know a standard complementary pnp-transistor for the
2N2369, such like 2N3905 but with higher ft and less feedback
capacitance? It seems that the manufactorers have almost no data on
their internet pages.

mfg. Winfried


Maybe 2N4261 ? Have not looked into the datasheet, but as i remember,
i have seen them sometimes in complementary with the 2N2369


the problem is, that it is an rf-transistor and can't be driven at
30V/0.2A, I found a complementary in an old table KTT, the 2N2894A, but
it also has max. 12V, so I find no other than the 2N3906.

If I simulate with the 2N3906, the frequency response is not worse than
with the 2N2894A.

mfg. Winfried