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-   -   small-signal (small-power) fast switching complementary transistors (http://www.diyaudio.com/forums/solid-state/59294-small-signal-small-power-fast-switching-complementary-transistors.html)

Lola Luna 17th June 2005 04:45 PM

small-signal (small-power) fast switching complementary transistors
 
Hi,

for the use in switching amplifiers also highspeed analog stages I am searching for a complementary pair of bjt-transistors inclusive saber and/or spice models. The parameters should correspond to

UCE(min)=80V, IC(min)=500mA, P(min)=200mW, hfe(min)=100, ft>300MHz, t,on/t,off=<50ns, case: 318-08/SOT23 or similar.

Thanks

Mr Evil 17th June 2005 05:07 PM

I can't think of anything that matches all of those parameters at once. If I wanted high speed complementary BJTs I might think of BFT93/BFR93, but they don't have high hfe or Ic. Higher gain transistors tend to be slower than 300MHz.

Lola Luna 19th June 2005 08:10 AM

To my regret, they have only 15 Volts ...

For Example:
UCE=60V, IC=600mA, P=500mW, hfe=100, ft=300MHz, t,on/t,off=50ns
This are (approximately) the characteristics of the 2N2905A, only 20...40V more UCE, an adequate case and he would be suitable for some of my applications.
Nowadays, there are no higher developed types than an goldy of the swinging sixties? :rolleyes:

tiefbassuebertr 8th April 2010 08:51 PM

check out this types from Sanyo
SANYO: 2SA1407E
and this thread:
http://www.diyaudio.com/forums/solid...-overview.html


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