NE685 NEC, NE685 Datasheet - Page 3
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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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NE68533
TYPICAL NOISE PARAMETERS
V
V
V
V
V
CE =
CE =
CE =
CE =
CE =
FREQ.
(MHz)
1000
1000
1000
1000
2000
1000
2000
2500
500
800
500
800
500
800
500
800
500
800
0.5 V
1.0 V
1.0 V
2.5 V
2.5 V
,
,
,
,
,
I
I
I
I
I
C =
C =
C =
C =
C =
NF
1.07
1.13
1.30
1.43
1.63
(dB)
0.9
1.1
1.3
0.9
1.0
1.2
0.9
1.0
1.2
0.9
1.0
1.1
1.6
0.5 mA
1.0 mA
0.5 mA
1 mA
3 mA
OPT
12.03
10.22
13.19
10.87
10.16
14.57
12.04
10.94
15.67
12.73
11.79
18.37
14.40
13.15
9.24
(dB)
7.48
6.59
4.73
G
A
0.76
0.72
0.67
MAG
0.73
0.67
0.64
0.75
0.73
0.68
0.73
0.68
0.65
0.59
0.61
0.55
0.56
0.42
0.24
Γ Γ Γ Γ Γ
OPT
ANG
19
37
50
45
18
35
47
17
33
16
30
42
53
35
14
19
40
69
(T
A
= 25˚C)
Rn/50
1.19
0.84
0.72
1.23
0.89
0.77
0.74
0.54
0.50
0.77
0.57
0.58
0.36
0.54
0.39
0.40
0.34
0.22
NE68539
TYPICAL NOISE PARAMETERS
V
V
V
V
CE =
CE =
CE =
CE =
FREQ.
(MHz)
1000
1500
2000
1000
1500
2000
2500
1000
1500
2000
2500
1000
500
800
500
800
500
800
500
800
2.5 V
2.5 V
2.5 V
3 V
,
I
C =
,
,
,
I
I
I
C =
C =
C =
NF
0.85
0.98
1.07
1.29
1.52
1.17
1.30
1.39
1.69
2.00
2.33
1.42
1.58
1.70
5.0 mA
1.27
1.40
1.50
1.81
2.13
2.47
(dB)
0.3 mA
1.0 mA
3.0 mA
OPT
13.3
18.2
14.9
13.2
10.0
16.3
12.6
11.0
19.5
15.8
14.1
10.9
(dB)
9.7
8.0
7.8
6.2
7.6
5.8
8.6
6.8
G
A
0.80
0.72
0.64
MAG
0.63
0.51
0.34
0.23
0.17
0.16
0.57
0.41
0.31
0.23
0.19
0.17
0.72
0.61
0.51
0.38
0.30
Γ Γ Γ Γ Γ
OPT
NE685 SERIES
ANG
18
32
43
-13
-10
19
29
33
28
13
17
25
26
21
10
17
29
40
55
67
(T
A
= 25˚C)
Rn/50
2.52
1.40
1.29
0.46
0.38
0.34
0.30
0.25
0.21
0.66
0.50
0.48
0.39
0.32
0.44
0.38
0.35
0.29
0.26
0.22