ISC 2SC4261

isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4261
DESCRIPTION
·Low Noise
·High Gain
APPLICATIONS
·Designed for use in UHF local oscillator.
ABSOLUTE MAXIMUM RATINGS(Ta=25℃)
SYMBOL
PARAMETER
VALUE
UNIT
VCBO
Collector-Base Voltage
25
V
VCEO
Collector-Emitter Voltage
15
V
VEBO
Emitter-Base Voltage
3.0
V
IC
Collector Current-Continuous
50
mA
PC
Collector Power Dissipation
@TC=25℃
0.1
W
TJ
Junction Temperature
150
℃
-55~150
℃
Tstg
Storage Temperature Range
isc Website：www.iscsemi.cn
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4261
ELECTRICAL CHARACTERISTICS
TC=25℃ unless otherwise specified
SYMBOL
V(BR)CBO
PARAMETER
CONDITIONS
MIN
TYP.
MAX
Collector-Base Breakdown Voltage
IC= 10μA ; IE= 0
ICBO
Collector Cutoff Current
VCB= 15V; IE= 0
0.3
μA
ICEO
Collector Cutoff Current
VCE= 15V; RBE= ∞
10
μA
IEBO
Emitter Cutoff Current
VEB= 3V; IC= 0
1.0
μA
Collector-Emitter Saturation Voltage
IC= 20mA ; IB= 4mA
0.3
V
DC Current Gain
IC= 5mA ; VCE= 5V
50
Current-Gain—Bandwidth Product
IC= 20mA ; VCE= 5V
1.8
COB
Output Capacitance
IE= 0 ; VCB= 10V;f= 1.0MHz
0.7
VOSC
Oscillating output voltage
IC= 5mA ; VCC= 5V; f= 930MHz
200
VCE(sat)
hFE
fT
isc Website：www.iscsemi.cn
2
25
UNIT
V
180
2.4
GHz
1.0
pF
mV
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
isc Website：www.iscsemi.cn
isc RF Product Specification
2SC4261
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4261
S-PARAMETERS (Emitter Common)
Test Condition VCE = 5V, 100MHz to 1000MHz (100 MHz Step), ZO = 50Ω
IC = 5 mA
IC = 10 mA
isc Website：www.iscsemi.cn
4
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4261
S-PARAMETERS (Emitter Common)
VCE = 5 V, IC = 5 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
100
0.718
–44.8
12.498
144.9
0.026
68.8
0.895
–14.6
200
0.549
–78.8
9.123
122.0
0.042
59.3
0.756
–20.3
300
0.439
–102.0
6.788
108.4
0.051
57.6
0.671
–21.3
400
0.381
–120.8
5.348
99.3
0.060
58.5
0.626
–21.5
500
0.351
–135.5
4.396
92.4
0.068
60.6
0.600
–21.8
600
0.340
–148.2
3.732
86.7
0.076
62.5
0.582
–22.5
700
0.337
–157.8
3.240
81.7
0.085
64.3
0.569
–23.3
800
0.337
–165.2
2.875
77.3
0.094
66.0
0.558
–24.4
900
0.343
–173.1
2.575
73.4
0.103
67.3
0.547
–25.8
1000
0.359
–177.9
2.355
70.0
0.112
68.4
0.538
–27.2
VCE = 5 V, IC = 10 mA, ZO = 50Ω
S21
S11
Freque.
S12
S22
MHz
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
100
0.553
–65.2
17.540
133.2
0.022
64.8
0.809
–18.0
200
0.401
–103.4
11.066
111.3
0.033
61.3
0.659
–20.0
300
0.337
–127.4
7.723
99.9
0.043
63.9
0.598
–18.6
400
0.314
–143.9
5.939
92.5
0.052
66.3
0.570
–18.1
500
0.313
–155.7
4.816
86.7
0.063
68.6
0.555
–18.2
600
0.314
–165.5
4.052
81.8
0.073
70.1
0.545
–18.9
700
0.327
–172.2
3.496
77.6
0.083
71.4
0.536
–19.9
800
0.335
–177.7
3.090
73.8
0.093
72.4
0.530
–21.0
900
0.349
176.8
2.753
70.1
0.103
73.0
0.523
–22.4
1000
0.354
172.8
2.515
67.0
0.113
74.0
0.516
–24.0
isc Website：www.iscsemi.cn
isc RF Product Specification
INCHANGE Semiconductor
isc Silicon NPN RF Transistor
2SC4261
Y-PARAMETERS (Emitter Common)
VCE = 5 V, IC = 5 mA
S21
S11
Freque.
S12
S22
MHz
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
100
3.035
5.491
152.256
–40.168
–0.005
–0.334
0.048
0.613
200
6.463
10.003
131.145
–71.318
–0.015
–0.679
0.100
1.238
300
10.768
12.356
103.025
–90.187
–0.036
–1.034
0.191
1.804
400
15.089
13.186
77.334
–98.666
–0.065
–1.397
0.232
2.386
500
18.776
12.837
55.039
–99.977
–0.090
–1.767
0.270
2.947
600
22.098
11.913
37.290
–98.247
–0.128
–2.134
0.347
3.555
700
24.568
10.731
22.802
–93.799
–0.163
–2.515
0.417
4.133
800
26.291
9.416
11.686
–88.266
–0.193
–2.890
0.516
4.703
900
28.112
7.683
2.225
–82.972
–0.260
–3.305
0.614
5.354
1000
29.685
6.751
–3.931
–78.720
–0.291
–3.746
0.629
5.908
VCE = 5 V, IC = 10 mA
S21
S11
Freque.
S12
S22
MHz
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
MAG.
ANG.
100
5.903
7.347
243.307
–103.091
–0.008
–0.338
0.026
0.591
200
11.583
10.820
168.225
–150.806
–0.022
–0.682
0.128
1.254
300
16.546
10.993
103.210
–155.623
–0.045
–1.041
0.216
1.797
400
20.055
10.038
61.965
–145.393
–0.074
–1.387
0.320
2.394
500
22.491
8.943
35.421
–131.365
–0.093
–1.766
0.316
2.917
600
24.417
7.556
16.762
–118.513
–0.133
–2.138
0.378
3.544
700
26.086
6.620
5.096
–107.291
–0.155
–2.531
0.424
4.086
800
27.193
5.569
–3.874
–97.359
–0.185
–2.923
0.469
4.659
900
28.543
4.340
–11.095
–88.952
–0.248
–3.349
0.563
5.307
1000
28.955
3.253
–15.953
–81.466
–0.270
–3.737
0.650
5.861
isc Website：www.iscsemi.cn
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