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

An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90

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

Options:

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

Answer: Option B

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