NE685 NEC, NE685 Datasheet - Page 7
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NE685
Manufacturer Part Number
NE685
Description
SURFACE MOUNT NPN SILICON HIGH FREQUENCY TRANSISTOR
Manufacturer
NEC
Datasheet
1.NE685.pdf
(17 pages)
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V
V
TYPICAL SCATTERING PARAMETERS
NE68530
V
V
Note:
1. Gain Calculation:
MAG =
FREQUENCY
CE
CE
CE
CE
= 2.5 V, I
= 3.0 V, I
= 0.5 V, I
= 1.0 V, I
GHz
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
4.0
2.5
4.0
0.1
0.4
0.8
1.0
1.5
2.5
3.0
0.1
0.4
0.8
1.0
1.5
2.0
3.0
5.0
2.0
0.1
0.4
0.8
1.0
1.5
2.0
2.5
3.0
4.0
|S
|S
21
12
|
|
0
-.2
(
.2
K
C
C
C
C
-.4
.4
= 1.0 mA
= 10 mA
= 0.5 mA
= 1.0 mA
0.651
0.220
0.986
0.900
0.735
0.463
0.339
0.258
0.219
0.905
0.079
0.764
0.414
0.224
0.181
0.112
0.090
0.086
0.090
0.098
0.119
0.986
0.938
0.821
0.749
0.581
0.457
0.368
0.323
0.975
0.756
0.682
0.509
0.387
0.289
0.207
.2
MAG
K - 1
-.6
2
.6
.4
.6
-.8
.8
S
).
-109.400
-135.300
-160.300
-165.800
-106.100
-130.100
-155.200
-102.100
-114.700
149.000
11
4 GHz
.8
-87.200
-28.100
-52.300
-63.100
-21.200
-54.500
-57.800
-27.100
-48.000
-57.100
-89.500
-63.500
-63.500
-42.600
-16.300
-24.300
-47.300
-58.200
-82.800
-26.200
-75.600
When K
S
48.700
-7.300
-6.400
-6.900
22
6.000
-1
1
ANG
1
4 GHz
S
1.5
11
-1.5
1.5
2
1, MAG is undefined and MSG values are used. MSG =
3
0.1 GHz
0.1 GHz
4
-2
2
S
S
11
5
20.910
11.575
22
2.541
3.516
3.231
2.766
2.070
1.735
1.517
1.358
1.143
1.839
1.763
1.612
1.542
1.356
1.198
1.091
1.007
3.412
2.779
2.569
2.098
2.805
2.002
1.550
1.397
6.493
5.306
3.640
2.314
1.619
1.441
3.207
1.762
1.190
10
-3
3
MAG
20
-4
4
5
-5
10
-10
20
-20
S
21
170.100
150.600
126.000
115.400
171.000
152.600
128.100
117.000
151.400
154.700
114.900
171.000
128.300
118.500
100.000
94.800
79.200
66.600
57.100
41.200
93.900
76.100
61.700
51.400
96.100
90.300
80.700
72.600
66.400
60.500
50.800
42.600
85.500
74.500
65.200
51.000
ANG
(V
Coordinates in Ohms
(T
CE
Frequency in GHz
A
= 2.5 V, I
= 25°C)
0.167
0.228
0.248
0.313
0.302
0.025
0.098
0.190
0.265
0.285
0.341
0.030
0.121
0.213
0.246
0.298
0.310
0.022
0.078
0.188
0.315
0.138
0.156
0.208
0.223
0.247
0.020
0.052
0.091
0.109
0.157
0.202
0.250
0.292
0.379
0.464
MAG
C
= 1 mA)
S
12
71.000
70.500
73.300
69.600
67.100
63.200
57.500
82.600
72.800
70.700
84.600
72.200
57.300
51.000
38.700
30.900
27.300
27.500
58.000
42.300
42.400
46.700
83.700
85.700
71.400
52.900
45.400
43.800
72.200
60.800
56.100
51.600
50.400
53.100
55.100
61.100
ANG
|S
|S
180˚
21
12
|
|
4 GHz
, K = 1 + |
225˚
135˚
S
21
0.377
0.963
0.873
0.821
0.695
0.607
0.542
0.501
0.993
0.939
0.812
0.747
0.609
0.521
0.458
0.419
0.396
0.374
0.997
0.990
0.948
0.616
0.548
0.510
0.457
0.841
0.792
0.679
0.577
0.910
0.590
0.433
0.389
0.392
0.389
0.307
MAG
0.1 GHz
2 |S
S
S
| - |S
12
22
-15.800
-35.000
-46.100
-54.900
-63.100
-71.000
-37.300
-59.300
-31.300
-34.300
-36.400
2
-29.300
-18.100
-32.000
-46.400
-52.900
-65.400
-79.400
-15.900
-31.900
-30.900
-30.600
-32.300
-41.800
-49.900
-16.300
-28.000
-38.900
-43.100
-47.900
-53.000
-32.300
-45.600
-4.000
-4.800
-4.700
12
270˚
90˚
1
2
3
ANG
S
11
4 GHz
21
.1
S
| - |S
12
2
|
0.1 GHz
.2
S
22
21
|
.3
2
,
45˚
0.418
0.082
0.220
0.516
0.741
0.922
1.053
1.131
1.163
315˚
0.098
0.207
0.384
0.472
0.685
0.863
1.030
1.162
0.106
0.220
0.506
0.410
0.727
0.909
1.042
1.118
1.133
0.241
0.732
0.946
0.989
1.035
1.054
1.048
1.047
1.033
1.009
.4
K
= S
0˚
11
S
22
11.635
21.481
15.181
12.191
11.263
- S
17.875
21.906
30.193
23.475
18.534
16.873
12.510
10.009
16.140
13.040
12.166
10.476
4.582
MAG
9.580
8.448
2.803
8.790
7.971
6.580
5.829
4.410
2.791
6.169
8.331
7.030
5.200
4.333
9.279
7.169
5.439
3.557
(dB)
21
S
12
1