2SA1083, 2SA1084, 2SA1085
Collector Output Capacitance vs.
Collector to Base Voltage
Collector output capacitance C
ob
(pF)
100
50
Singnal source resistance R
g
(kΩ)
I
E
= 0
f = 1 MHz
100
30
10
3
1.0
0.3
0.1
0.03
10
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector Current I
C
(mA)
NF = 0.5 dB
1
2
4
6
Contours of Constant Noise Figure (1)
V
CE
= –6 V
f = 1 kHz
20
10
5
2
1
–0.5 –1.0 –2
–5 –10 –20
–50
Collector to Base Voltage V
CB
(V)
Contours of Constant Noise Figure (2)
100
Singnal source resistance R
g
(kΩ)
30
10
3
1.0
0.3
0.1
0.03
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector Current I
C
(mA)
NF = 0.5 dB
1 2 4 6
10
Singnal source resistance R
g
(kΩ)
V
CE
= –6 V
f = 120 Hz
100
30
10
3
1.0
0.3
0.1
0.03
Contours of Constant Noise Figure (3)
V
CE
= –6 V
f = 10 Hz
NF = 0.5 dB
12
4 6 10
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector Current I
C
(mA)
6
HITACHI [ HITACHI SEMICONDUCTOR ]
