16
S21e2 -- IC
14
VCE=3V
1V
12
10
8
6
4
2
1.0
2
5.0
VCE=1V
4.5 f=2GHz
3
5 7 10
23
Collector Current, IC -- mA
NF -- IC
4.0
3.5
3.0
2.5
Zs=50Ω
2.0
Zs=Zsopt
1.5
1.0
0.5
0
1.0
120
23
5 7 10
23
Collector Current, IC -- mA
PC -- Ta
2SC5781
f=1GHz
5 7 100
IT04846
5 7 100
IT04848
S21e2 -- IC
12
f=2GHz
10
VCE=3V
8
1V
6
4
2
0
1.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.0
23
5 7 10
23
Collector Current, IC -- mA
NF -- IC
Zs=Zsopt
23
5 7 10
23
Collector Current, IC -- mA
5 7 100
IT04847
VCE=3V
f=2GHz
5 7 100
IT04849
100
80
60
40
20
0
0
20
40
60
80 100 120 140 160
Ambient Temperature, Ta -- °C
IT04850
No.7321-3/7