Darlington Transistors At RF?

March 23rd 05, 07:01 AM

Posts: n/a

There are a few darlington transistors with an fT ratings of 20-200
MHz. IIRC, they are 2N6576, 2N6577 and 2N6578, all NPN devices with
Pd's of 120 watts. I'm not sure if 20-200 is a misprint. Looks like
one could get a lot of output with very little drive! Is anyone
familiar with the 2N657x series? Are they suitable for VHF?

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