Continued from preceding page.
Parameter
Forward Transfer Gain
Maximum Available Power Gain
Noise Figure
2SC3779
Symbol
Conditions
| S21e |2
MAG
NF
VCE=10V, IC=20mA, f=0.9GHz
VCE=10V, IC=20mA, f=0.9GHz
VCE=10V, IC=5mA, f=0.9GHz,
See specified Test Circuit.
Ratings
Unit
min
typ
max
8.5
10
dB
14
dB
1.5
3.0 dB
NF Test Circuit
3
VB
INPUT
2kΩ
C1
L1
C2
C3
1
VCC
CH
L2
L3
C4
C5
OUTPUT
2
900MHz
C1
~5pF
C2
~10pF
C3
~10pF
C4
~10pF
C5
~10pF
L1
W ≈ 1.5mm, l ≈ 25mm
Strip line
L2
W ≈ 4mm, l ≈ 25mm
Strip line
L3
0.5φ, l ≈ 40mm
CH
2t+bead core
IC -- VBE
120
VCE=10V
100
80
60
40
20
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Base-to-Emitter Voltage, VBE – V ITR05986
hFE -- IC
3
VCE=10V
2
100
7
5
3
2
10
5 7 1.0
2 3 5 7 10 2 3 5 7 100 2
Collector Current, IC – mA
ITR05987
No.1954–2/5