BFP405 Datasheet, PDF (3/8 Pages) Siemens Semiconductor Group – NPN Silicon RF Transistor (For low current applications For oscillators up to 12 GHz)

BFP 405
Common Emitter S-Parameters
f
S₁₁
GHz MAG
ANG
MAG
V_CE = 2V, I_C = 5mA
0.1 0.841
-5.2
0.5 0.791
-25.4
1
0.682
-48.7
2
0.449
-88.6
3
0.304
-126.1
4
0.239
-171.1
6
0.303
129.3
8
0.464
91.4
9
0.549
77.9
10
0.631
71
11
0.666
67.6
12
0.693
63.4
13.52
12.76
11.25
8.04
5.91
4.63
3.13
2.22
1.93
1.65
1.47
1.23
S₂₁
ANG
174.9
154.6
133.3
100.3
77.4
58.9
28
-1.5
-15.5
-27.5
-38.2
-49.5
S₁₂
MAG
ANG
0.0033
0.0161
0.0290
0.0479
0.0639
0.799
0.1104
0.118
0.129
0.136
0.145
0.155
88.9
77.5
67.9
55.4
49.2
43.2
30.2
13.6
5.1
-2.2
-8.5
-15.3
S₂₂
MAG
ANG
0.986
0.956
0.873
0.709
0.594
0.509
0.386
0.251
0.153
0.069
0.127
0.187
-2.5
-12.6
-22.7
-36.8
-44.7
-55.5
-73.5
-92.2
106.6
-166.6
137.2
75.6
Common Emitter Noise Parameters
f
F_min ¹⁾ G_a ¹⁾
Γ_opt
R_N
GHz dB
dB
MAG
ANG
Ω
V_CE = 2V, I_C = 2mA
0.9
0.9
21.2
0.54
14
21
1.8 1.15
18.2
0.46
27
19
2.4 1.35
15.5
0.41
38
18
3.0 1.46
14.5
0.34
55
17
4
1.62
11.9
0.26
80
12.5
5
1.75
9.3
0.17
117
11
6
2.15
8.1
0.13
180
14
1) Input matched for minimum noise figure, output for maximum gain
r_n
F_50Ω ²⁾ |S₂₁|^{2 2)}
-
dB
dB
0.42
1.8
16.1
0.38
1.8
15
0.36
1.8
14
0.34
1.8
12.9
0.25
1.8
11.3
0.22
1.9
9.7
0.28
2.2
8.2
2) Z_S = Z_L = 50Ω
For more and detailed S- and Noise-parameters please contact your local Siemens
distributor or sales office to obtain a Siemens Application Notes CD-ROM or see Internet:
http://www.siemens.de/Semiconductor/products/35/35.htm
SSeemmicioconndduuctcotor ^rGGrorouupp
3³
Sep-₁0₉9₉₈-1_-19₁9_-08₁