Q
An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are________?
-
A
A. Ft =1.64 x 108 hz & fβ = 1.47 x 1010 hz.
-
B
B. Ft =1.47 x 1010 hz & fβ = 1.64 x 108 hz
-
C
C. Ft =1.33 x 1012 hz & fβ = 1.47 x 1010 hz
-
D
D. Ft =1.47 x 1010 hz & fβ = 1.33 x 1012 hz
Correct Answer:
B. B. Ft =1.47 x 1010 hz & fβ = 1.64 x 108 hz
