2SC4994 Datasheet, PDF (8/10 Pages) Hitachi Semiconductor – Silicon NPN Epitaxial

2SC4994
S Parameters (V_CE = 1 V, I_C = 1 mA, Z_O = 50 Ω)
Freq.
(MHz)
200
400
600
800
1000
1200
1400
1600
1800
2000
S11
MAG.
0.939
0.895
0.834
0.761
0.693
0.642
0.582
0.544
0.507
0.489
ANG.
–17.2
–33.7
–47.9
–61.5
–74.3
–86.5
–97.0
–107.2
–117.4
–127.2
S21
MAG.
3.35
3.25
2.79
2.77
2.51
2.30
2.08
1.93
1.79
1.66
ANG.
165.1
151.8
139.8
128.9
119.0
110.5
103.9
97.2
91.0
85.7
S12
MAG.
0.0525
0.0977
134
0.163
0.185
0.200
0.212
0.220
0.227
0.230
ANG.
78.0
67.7
58.4
50.6
44.4
38.9
34.7
31.2
28.1
25.0
S22
MAG.
0.978
0.933
0.873
0.805
0.743
0.687
0.644
0.602
0.568
0.538
ANG.
–11.8
–22.5
–32.0
–40.8
–48.0
–54.4
–59.5
–64.1
–68.8
–73.5
S Parameters (V_CE = 1 V, I_C = 2 mA, Z_O = 50 Ω)
Freq.
(MHz)
200
400
600
800
1000
1200
1400
1600
1800
2000
S11
MAG.
0.889
0.814
0.724
0.646
0.572
0.531
0.484
0.463
0.441
0.434
ANG.
–24.3
–46.0
–65.4
–81.9
–97.0
–110.2
–123.1
–134.4
–144.5
–154.7
S21
MAG.
6.20
5.69
4.99
4.42
3.85
3.42
3.04
2.75
2.51
2.30
ANG.
161.2
145.2
131.7
120.8
111.7
104.0
98.2
92.3
87.2
82.6
S12
MAG.
0.0508
0.0906
0.119
0.138
0.151
0.160
0.167
0.173
0.177
0.180
ANG.
74.6
62.5
52.7
45.2
40.4
36.7
34.1
32.2
30.3
29.1
S22
MAG.
0.955
0.871
0.773
0.678
0.604
0.540
0.494
0.454
0.423
0.396
ANG.
–17.2
–31.4
–42.8
–52.7
–59.2
–65.3
–70.6
–74.9
–79.3
–83.4
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