INCHANGE Semiconductor
isc
RF Product Specification
isc
Silicon NPN RF Transistor
2SC4228
DESCRIPTION
·High
f
T
8.0GHz TYP. @V
CE
= 3 V, I
C
= 5 mA, f = 2 GHz
·Low
C
re
0.3pF TYP., @V
CB
= 3 V, I
E
= 0, f = 1 MHz
·High
︱
S
21e
︱
2
7.5 dB TYP. @V
CE
= 3 V, I
C
= 5 mA, f = 2 GHz
APPLICATIONS
·Designed
for VHF, UHF low noise amplifier.
ABSOLUTE MAXIMUM RATINGS(T
a
=25
℃)
SYMBOL
PARAMETER
VALUE
UNIT
V
CBO
Collector-Base Voltage
20
V
V
CEO
Collector-Emitter Voltage
10
V
V
EBO
Emitter-Base Voltage
1.5
V
I
C
Collector Current-Continuous
Collector Power Dissipation
@T
C
=25℃
Junction Temperature
35
mA
P
C
0.15
W
T
J
150
℃
T
stg
Storage Temperature Range
-65~150
℃
isc website：www.iscsemi.cn
1
INCHANGE Semiconductor
isc
RF Product Specification
isc
Silicon NPN RF Transistor
ELECTRICAL CHARACTERISTICS
T
C
=25℃ unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN
2SC4228
TYP.
MAX
UNIT
I
CBO
Collector Cutoff Current
V
CB
= 10V; I
E
= 0
1.0
μA
I
EBO
Emitter Cutoff Current
V
EB
= 1V; I
C
= 0
1.0
μA
h
FE
DC Current Gain
I
C
= 5mA ; V
CE
= 3V
50
250
f
T
Current-Gain—Bandwidth Product
I
C
= 5mA ; V
CE
= 3V ; f= 2GHz
5.5
8.0
GHz
C
re
︱
S
21e
︱
2
NF
Feed-Back Capacitance
I
E
= 0 ; V
CB
= 3V; f= 1MHz
0.3
0.7
pF
Insertion Power Gain
I
C
= 5mA ; V
CE
= 3V; f= 2GHz
5.5
7.5
dB
Noise Figure
I
C
= 5mA ; V
CE
= 3V; f= 2GHz
1.9
3.2
dB
h
FE
Classification
Class
Marking
h
FE
R43
R43
50-100
R44
R44
80-160
R45
R45
125-250
isc website：www.iscsemi.cn
2
INCHANGE Semiconductor
isc
RF Product Specification
isc
Silicon NPN RF Transistor
2SC4228
isc website：www.iscsemi.cn
3
INCHANGE Semiconductor
isc
RF Product Specification
isc
Silicon NPN RF Transistor
2SC4228
isc website：www.iscsemi.cn
4
INCHANGE Semiconductor
isc
RF Product Specification
isc
Silicon NPN RF Transistor
S-PARAMETER
V
CE
= 3 V, I
C
= 5 mA, Z
O
= 50Ω
Freque.
MHz
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
MAG
0.875
0.762
0.677
0.565
0.495
0.425
0.372
0.327
0.289
0.255
0.236
0.214
0.195
0.182
0.165
0.153
0.145
0.139
0.134
0.129
2SC4228
S
11
ANG
–18.6
–35.0
–47.2
–59.4
–67.5
–76.1
–81.6
–88.5
–93.6
–100.5
–105.2
–112.2
–117.6
–123.8
–129.9
–137.4
–144.3
–151.8
–157.0
–164.7
MAG
14.087
12.290
10.888
9.275
8.300
7.184
6.454
5.818
5.231
4.820
4.444
4.142
3.842
3.554
3.343
3.218
3.091
2.857
2.764
2.624
S
21
ANG
161.1
145.1
133.6
123.6
115.7
108.9
104.8
99.5
95.5
92.0
88.8
85.3
83.2
79.3
77.4
75.3
73.6
70.4
68.7
66.4
MAG
0.018
0.034
0.048
0.055
0.063
0.074
0.084
0.089
0.092
0.104
0.105
0.113
0.122
0.127
0.139
0.140
0.152
0.162
0.168
0.176
S
12
ANG
78.2
68.6
66.6
65.8
63.5
61.1
63.8
62.7
64.6
62.8
64.2
64.2
63.6
65.0
64.1
64.5
65.4
64.3
62.3
64.8
MAG
0.958
0.888
0.800
0.719
0.669
0.610
0.600
0.560
0.543
0.519
0.512
0.497
0.476
0.481
0.467
0.466
0.458
0.456
0.451
0.445
S
22
ANG
–10.1
–17.7
–24.4
–26.7
–28.7
–30.3
–30.6
–31.3
–30.1
–33.4
–31.8
–33.4
–33.2
–34.2
–34.6
–34.8
–37.2
–36.1
–38.4
–39.0
isc website：www.iscsemi.cn
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