Is there any such thing as a descrete schottkey transistor?

[oldschoolcharlie]

Ive found some schottkey transistor mentions in wiki but I cant find any schottkey transistor descretes on mouser or digikey.

Any ideas?  Anybody heard of something like that?

[oskar]

Shottkys are diodes. Some discrete transistors have shottky diodes integrated. Edit! I can't find one... I could be wrong.



Edit! Bad example link removed!     

[R.G.]

There are no transistors made exclusively from schottky junctions on both collector and emitter junctions that I know of, if that's what you mean. In fact, I don't know of any that have one schottky junction.

There are ICs with schottky junctions integrated in. A schottky diode is just an appropriate metal layer on a properly doped semiconductor, so schottky diodes are easy to make if you have the right semiconductor process already going. They're used for clamps and protection diodes. The old 74Sxx and 74LSxx logic families were heavily schottky based, as the "S" stood for "Schottky". Schottky diodes are half the forward voltage of silicon and do not store charge like silicon junctions so they're FAST. Used a lot in rectifiers for switching power supplies for those characteristics.

[earthtonesaudio]

74LS05 might be as close as you can get to a "discrete" Schottky transistor... but you get 6 of them.
http://www.datasheetcatalog.org/datasheets/70/375319_DS.pdf

[Sir H C]

Maybe some RF transistors have that, I know that some of the Maxim bipolar processes have them for the speed.