2SC1906
Gain Bandwidth Product Curve
20
1,200
Gain Bandwidth Product vs.
Collector Current
Gain Bandwidth Product f
T
(MHz)
700
800
Collector Current I
C
(mA)
90
16
12
f
T
=
0
1,0
0M
Hz
1,000
800
600
400
200
0
0.1
V
CE
= 10 V
f = 100 MHz
8
4
600
500
0
4
8
12
16
20
Collector to Emitter Voltage V
CE
(V)
0
0.3
1.0
3
10
30
100
Collector Current I
C
(mA)
Base Time Constant vs.
Collector Currnt
200
Base time Constant r
bb'
•C
C
(ps)
Input Suceptance b
ie
(mS)
100
50
V
CB
= 10 V
f = 31.8 MHz
12
10
8
6
4
2
Input Admittance vs. Frequency
2 mA 4 mA 8 mA 12 mA
I
C
= 1 mA
250
200
20
10
5
100
50
f = 25 MHz
y
ie
= g
ie
+jb
ie
V
CE
= 9 V
2
0.1
0.2
0.5
1.0
2
5
10
0
Collector Current I
C
(mA)
10
2
4
6
8
Input Conductance g
ie
(mS)
12
4
HITACHI [ HITACHI SEMICONDUCTOR ]
