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2SC4197 Datasheet, PDF (6/10 Pages) Hitachi Semiconductor – Silicon NPN Epitaxial
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2SC4197
S Parameters (Emitter Common)
Test Condition
Freq.
(MHz)
100
200
300
400
500
600
700
800
900
1000
S11
MAG.
ANG.
0.744
–48.4
0.599
–85.5
0.506
–110.7
0.457
–128.9
0.440
–143.5
0.430
–155.1
0.437
–163.2
0.441
–170.9
0.452
–177.1
0.462
177.5
S21
MAG.
13.142
9.669
7.201
5.696
4.687
3.977
3.453
3.070
2.746
2.508
ANG.
145.9
123.5
109.5
100.6
93.9
88.1
83.5
79.1
75.4
71.9
VCE = 5 V, IC = 5 mA, ZO = 50 Ω
S12
S22
MAG.
ANG.
MAG.
ANG.
0.034
67.5
0.876
–19.1
0.053
55.9
0.702
–28.2
0.064
52.6
0.586
–30.9
0.072
52.7
0.520
–31.2
0.079
54.3
0.480
–31.2
0.087
57.1
0.452
–31.5
0.095
59.4
0.432
–31.7
0.104
61.3
0.417
–32.4
0.113
63.6
0.402
–33.4
0.122
65.6
0.390
–34.5
Test Condition
Freq.
(MHz)
100
200
300
400
500
600
700
800
900
1000
S11
MAG.
ANG.
0.585
–69.3
0.460
–110.1
0.408
–133.9
0.390
–149.7
0.390
–160.7
0.391
–169.8
0.404
–176.7
0.411
178.0
0.426
173.1
0.436
169.8
S21
MAG.
19.233
12.238
8.571
6.608
5.348
4.503
3.884
3.446
3.069
2.803
ANG.
134.4
112.6
101.3
94.5
88.7
84.4
80.3
76.8
73.4
70.7
VCE = 5 V, IC = 10 mA, ZO = 50 Ω
S12
S22
MAG.
ANG.
MAG.
ANG.
0.028
63.8
0.768
–25.6
0.041
58.1
0.564
–31.4
0.052
60.0
0.468
–30.5
0.062
62.9
0.420
–29.1
0.073
65.3
0.394
–28.1
0.084
67.7
0.375
–27.8
0.095
69.1
0.361
–27.7
0.107
70.3
0.350
–28.2
0.119
71.5
0.339
–29.0
0.131
72.2
0.330
–29.7
Y Parameters (Emitter Common)
Test Condition
Freq.
(MHz)
100
200
300
400
500
600
700
800
900
1000
Yie (mS)
REAL
IMAG.
2.663
5.357
5.558
10.174
9.651
13.450
14.160
15.066
18.753
15.624
23.019
14.727
26.444
13.908
29.378
12.040
31.931
9.960
33.671
7.667
Yfe (mS)
REAL
IMAG.
161.804 –34.193
147.899 –63.499
125.634 –87.205
102.261 –102.289
80.041 –110.827
57.826 –114.923
40.437 –113.783
24.049 –111.316
10.602 –106.726
–0.922 –101.485
Yre (mS)
REAL
IMAG.
–0.002
–0.425
–0.012
–0.880
–0.041
–1.354
–0.093
–1.820
–0.150
–2.309
–0.214
–2.798
–0.263
–3.305
–0.379
–3.822
–0.466
–4.371
–0.586
–4.913
VCE = 5 V, IC = 5 mA
Yoe (mS)
REAL
IMAG.
0.055
0.627
0.025
1.270
0.026
2.024
0.044
2.772
0.048
3.510
0.124
4.301
0.211
4.964
0.268
5.828
0.407
6.578
0.524
7.381
Rev.3.00 Aug 10, 2005 page 6 of 9
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