BFQ81 Datasheet, PDF (4/11 Pages) Siemens Semiconductor Group – NPN Silicon RF Transistor (For low-noise amplifiers up to 2GHz and broadband analog and digital applications)

BFQ81
Vishay Semiconductors
V_CE/V
6
6
6
I_C/mA
5
10
20
f/MHz
300
500
800
1000
1200
1500
1800
2000
2200
2500
2800
3000
100
300
500
800
1000
1200
1500
1800
2000
2200
2500
2800
3000
100
300
500
800
1000
1200
1500
1800
2000
2200
2500
2800
3000
100
S11
LIN
MAG
ANG
deg
0.725
-62.5
0.585
-92.0
0.473
-125.6
0.437
-142.0
0.416
-157.2
0.410
-177.0
0.416
167.2
0.428
157.9
0.446
149.4
0.468
137.2
0.492
127.1
0.514
119.9
0.758
-34.7
0.504
-84.6
0.378
-114.5
0.304
-146.3
0.293
-160.6
0.288
-173.5
0.293
170.7
0.310
157.4
0.328
150.0
0.341
142.7
0.372
133.4
0.397
124.4
0.425
118.0
0.594
-49.3
0.340
-105.4
0.262
-134.7
0.232
-163.7
0.226
-174.6
0.231
173.7
0.243
161.8
0.261
150.9
0.282
145.1
0.296
138.2
0.326
130.8
0.357
122.7
0.381
116.8
0.415
-68.7
S21
LIN
MAG
ANG
deg
5.41
132.7
4.23
114.0
3.08
95.5
2.62
86.9
2.26
78.9
1.91
68.9
1.64
59.9
1.51
55.0
1.41
50.8
1.29
43.8
1.18
37.6
1.10
34.2
13.78
152.3
9.02
118.9
6.20
102.5
4.17
87.9
3.44
81.2
2.93
74.8
2.44
66.7
2.08
59.1
1.91
54.8
1.79
50.7
1.63
44.4
1.49
38.3
1.39
34.8
21.23
142.2
11.25
108.9
7.21
95.5
4.71
83.8
3.85
78.1
3.25
72.6
2.70
65.3
2.31
58.3
2.11
54.5
1.97
50.7
1.79
44.8
1.64
38.7
1.52
35.4
27.88
131.7
S12
LIN
MAG
ANG
deg
0.061
57.4
0.078
49.3
0.091
46.9
0.097
48.8
0.103
52.2
0.115
57.8
0.133
63.7
0.149
66.5
0.167
68.9
0.197
70.5
0.228
71.0
0.251
70.7
0.023
72.3
0.048
57.9
0.062
57.5
0.083
61.7
0.097
63.8
0.112
65.5
0.136
67.0
0.163
67.9
0.182
67.7
0.201
67.4
0.229
66.4
0.257
64.9
0.274
63.9
0.020
69.0
0.040
63.8
0.057
66.7
0.084
69.8
0.102
70.8
0.121
70.6
0.148
69.9
0.177
69.1
0.197
67.9
0.218
66.8
0.246
64.8
0.271
62.7
0.287
61.2
0.017
68.66
S22
LIN
MAG
ANG
deg
0.830
-18.6
0.728
-22.0
0.652
-23.7
0.630
-24.9
0.616
-26.6
0.598
-30.0
0.589
-33.6
0.585
-36.6
0.580
-39.6
0.576
-45.2
0.562
-51.3
0.555
-55.4
0.911
-14.1
0.675
-23.5
0.575
-22.6
0.527
-21.1
0.518
-21.6
0.513
-22.8
0.505
-25.9
0.498
-29.6
0.494
-32.4
0.488
-35.2
0.481
-40.6
0.463
-46.1
0.454
-49.6
0.827
-19.7
0.558
-23.8
0.487
-19.8
0.466
-17.4
0.467
-18.0
0.465
-19.6
0.461
-23.0
0.455
-26.8
0.450
-29.7
0.442
-32.5
4634
-37.9
0.414
-43.0
0.403
-46.2
0.728
-23.6
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4
Document Number 85023
Rev. 1.6, 08-Sep-08