2011-09-21
4
BF799
Collector-base capacitance C
cb
= f (V
CB
)
f = 1 MHz
0
EHT07117BF 799
0.5
1.0
pF
1.5
20V10
V
CB
0
cb
C
Transition frequency f
T
= f (I
C
)
f = 100MHz
0
0
EHT07116BF 799
20 mA 50
200
400
600
800
1000
MHz
1200
10 30 40
V
CE
= 5
2
V
V
Ι
C
T
f
