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2SC4957 Datasheet(PDF) 4 Page - NEC

Part No. 2SC4957
Description  HIGH FREQUENCY LOW NOISE AMPLIFIER NPN SILICON EPITAXIAL TRANSISTOR 4 PINS MINI MOLD
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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4
2SC4957
S-PARAMETER
(VCE = 3 V, IC = 1 mA, ZO = 50
Ω)
fS11
S21
S12
S22
(GHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.200
.935
–14.9
3.466
165.9
.034
79.7
.991
–7.9
0.400
.891
–30.0
3.392
151.4
.066
73.1
.962
–16.1
0.600
.830
–44.6
3.269
137.9
.096
61.6
.916
–22.6
0.800
.759
–58.8
3.090
125.8
.119
53.2
.870
–29.2
1.000
.677
–74.2
2.891
113.5
.138
45.6
.813
–35.1
1.200
.597
–88.4
2.690
102.0
.154
40.6
.764
–41.2
1.400
.521
–104.0
2.519
92.4
.161
33.9
.706
–46.0
1.600
.467
–119.3
2.327
82.0
.172
31.2
.662
–50.4
1.800
.418
–134.6
2.190
73.1
.177
27.0
.619
–55.3
2.000
.391
–152.1
2.052
64.9
.177
23.4
.581
–60.1
2.200
.382
–168.4
1.909
56.5
.180
19.8
.550
–64.5
2.400
.384
175.2
1.793
49.2
.189
22.1
.531
–68.5
2.600
.379
163.6
1.684
42.4
.181
19.6
.484
–73.2
2.800
.408
151.4
1.574
36.1
.189
18.3
.482
–78.0
3.000
.431
142.5
1.482
31.5
.184
18.0
.454
–84.7
(VCE = 3 V, IC = 3 mA, ZO = 50
Ω)
fS11
S21
S12
S22
(GHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.200
.813
–24.5
8.901
156.5
.034
79.6
.955
–13.4
0.400
.693
–46.7
7.806
135.6
.058
67.4
.862
–24.7
0.600
.563
–65.0
6.683
119.4
.078
59.1
.758
–31.6
0.800
.453
–81.5
5.677
106.9
.092
53.5
.669
–37.3
1.000
.362
–98.3
4.878
95.8
.105
50.1
.606
–40.8
1.200
.290
–115.6
4.249
86.1
.112
47.5
.553
–45.2
1.400
.250
–133.3
3.771
78.6
.123
46.3
.509
–48.4
1.600
.217
–153.6
3.363
70.7
.141
43.2
.472
–52.4
1.800
.206
–171.5
3.053
63.4
.149
42.5
.438
–55.7
2.000
.221
170.3
2.807
57.1
.158
39.6
.407
–60.9
2.200
.238
153.4
2.571
50.5
.169
39.1
.388
–65.7
2.400
.264
142.1
2.382
45.0
.178
36.3
.362
–70.1
2.600
.285
132.7
2.219
39.6
.197
35.2
.326
–73.4
2.800
.317
124.4
2.080
34.3
.204
35.4
.317
–79.0
3.000
.344
119.8
1.953
29.7
.223
32.9
.302
–87.6




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