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________?

Question

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________?

Answer 1

A. fT =1.64 x 108 Hz & fβ = 1.47 x 1010 Hz.
B. fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz
C. fT =1.33 x 1012 Hz & fβ = 1.47 x 1010 Hz
D. fT =1.47 x 1010 Hz & fβ = 1.33 x 1012 Hz

Correct Answer: fT =1.47 x 1010 Hz & fβ = 1.64 x 108 Hz ✔

Last Updated: December 19, 2018