
TYPICAL COMMON EMITTER SCATTERING PARAMETERS
j50
Coordinates in Ohms
Frequency in GHz
(V
CE
= 2.5 V, I
C
= 3 mA)
NE68119
V
CE
= 2.5 V, I
C
= 0.3 mA
FREQUENCY
50
0.995
0.992
0.981
0.967
0.950
0.929
0.915
0.892
0.874
0.853
0.838
0.770
0.723
0.693
-6.1
-11.9
-23.5
-35.3
-46.1
-57.0
-67.0
-77.0
-86.0
-94.5
-102.9
-139.2
-170.6
132.2
1.283
1.081
1.038
1.021
0.985
0.952
0.936
0.888
0.869
0.808
0.784
0.652
0.564
0.441
174.1
170.4
158.4
149.2
139.2
130.0
121.0
112.7
105.0
97.2
90.6
61.2
39.0
9.0
0.017
0.027
0.052
0.078
0.096
0.114
0.130
0.144
0.153
0.160
0.165
0.169
0.146
0.085
88.1
80.9
74.0
65.0
58.4
52.4
44.5
38.5
32.7
27.3
21.8
1.6
-12.7
6.0
0.997
0.995
0.991
0.989
0.979
0.962
0.948
0.937
0.928
0.916
0.908
0.869
0.842
0.803
-1.1
-4.5
-9.3
-14.3
-18.2
-22.5
-26.4
-30.1
-33.9
-37.1
-40.5
-54.5
-66.5
-91.2
0.02
0.06
0.11
0.15
0.20
0.23
0.30
0.33
0.36
0.42
0.45
0.66
0.95
1.98
18.8
16.0
13.0
11.2
10.1
9.2
8.6
7.9
7.5
7.0
6.8
5.9
5.9
1.5
100
200
300
400
500
600
700
800
900
1000
1500
2000
3000
50
0.937
0.904
0.839
0.771
0.699
0.642
0.598
0.564
0.534
0.511
0.494
0.438
0.409
0.410
-13.0
-22.9
-44.6
-63.4
-79.9
-93.8
-106.0
-116.4
-125.9
-134.1
-141.6
-172.6
162.4
117.0
10.816
9.618
8.856
7.858
6.982
6.172
5.458
4.898
4.429
4.032
3.696
2.618
2.042
1.474
167.8
161.4
145.9
133.0
121.6
112.2
104.1
97.3
91.1
85.5
80.6
59.5
41.8
11.1
0.014
0.023
0.044
0.061
0.071
0.080
0.086
0.089
0.093
0.095
0.099
0.113
0.130
0.187
85.2
76.5
65.5
55.3
48.3
42.4
38.7
36.7
34.0
33.3
32.1
29.1
28.7
24.2
0.970
0.955
0.907
0.830
0.761
0.699
0.651
0.613
0.587
0.565
0.549
0.508
0.485
0.448
-5.3
-12.0
-21.5
-29.5
-35.9
-39.7
-43.3
-46.0
-48.2
-50.1
-52.3
-59.9
-67.6
-85.5
0.08
0.10
0.16
0.25
0.32
0.41
0.48
0.55
0.62
0.69
0.74
0.99
1.15
1.16
28.9
26.2
23.0
21.1
19.9
18.9
18.0
17.4
16.8
16.3
15.7
13.6
9.6
6.5
100
200
300
400
500
600
700
800
900
1000
1500
2000
3000
50
0.979
0.965
0.944
0.915
0.877
0.836
0.802
0.770
0.741
0.714
0.694
0.616
0.572
0.555
-8.4
-15.9
-30.0
-44.6
-57.8
-70.1
-81.8
-92.3
-102.0
-110.7
-118.7
-153.7
177.3
125.5
4.317
3.510
3.384
3.234
3.069
2.855
2.671
2.502
2.341
2.195
2.041
1.547
1.255
0.940
172.8
166.3
155.6
145.3
134.8
125.6
116.9
109.0
102.0
95.1
89.4
63.8
43.4
10.4
0.016
0.026
0.049
0.069
0.090
0.104
0.115
0.122
0.127
0.133
0.135
0.132
0.124
0.132
87.7
77.4
71.9
60.3
54.9
45.7
40.8
34.6
29.9
25.9
21.6
9.1
6.7
20.2
0.990
0.986
0.971
0.949
0.918
0.883
0.850
0.822
0.798
0.778
0.762
0.706
0.672
0.627
-1.3
-7.5
-13.0
-19.4
-24.6
-29.1
-33.4
-37.2
-40.6
-43.4
-46.4
-58.1
-68.2
-89.7
0.04
0.10
0.09
0.15
0.17
0.25
0.28
0.33
0.38
0.43
0.48
0.75
1.07
1.41
24.3
21.3
18.4
16.7
15.3
14.4
13.7
13.1
12.7
12.2
11.8
10.7
8.4
4.7
100
200
300
400
500
600
700
800
900
1000
1500
2000
3000
S
11
S
21
S
12
S
22
K
MAG
1
(MHz)
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
(dB)
V
CE
= 2.5 V, I
C
= 1.0 mA
V
CE
= 2.5 V, I
C
= 3 mA
NE681 SERIES
See note on next page.
j25
j10
0
-j10
-j25
-j50
-j100
j100
0
10
25
50
100
S
11
5 GHz
S
11
0.05 GHz
S
22
0.05 GHz
S
22
5 GHz
120
90
60
30
150
180
-150
-120
-90
-60
-30
0
10
8
6
4
0.5
0.3
0.2
S
12
0.5 GHz
S
21
5 GHz
S
21
S
21
0.5 GHz
S
12
5 GHz