On 30 Nov 2005 18:46:34 -0800, Winfield Hill
wrote:

Winfried Salomon wrote...
Jorgen Lund-Nielsen wrote:
Winfried Salomon wrote:

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.

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

That was a high-frequency part for the time, spec'd at 1200MHz...

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.

An old Raytheon datasheet says the 2N2894 was doped with platinum.

[snip]

Thanks for tracking that down, Win! Gold in a PNP was certainly
troubling my ancient remembrance of semiconductor chemistry.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.