NE678M04 datasheet(6/7 Pages) NEC

Part #	NE678M04

Description	MEDIUM POWER NPN SILICON HIGH FREQUENCY TRANSISTOR

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Manufacturer	NEC [NEC]

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NE678M04

FREQUENCY

S11

S21

S12

S22

K

MAG1

GHz

MAG

ANG

MAG

ANG

MAG

ANG

MAG

ANG

(dB)

0.100

0.52

-74.30

39.85

141.89

0.02

63.14

0.79

-43.24

0.22

33.48

0.200

0.55

-114.70

28.29

120.64

0.03

50.10

0.58

-69.59

0.37

30.30

0.300

0.56

-136.33

20.98

108.33

0.03

45.90

0.46

-86.51

0.49

28.27

0.400

0.56

-149.34

16.42

100.26

0.03

45.26

0.40

-97.94

0.61

26.78

0.500

0.56

-158.35

13.45

94.25

0.04

45.86

0.36

-106.44

0.69

25.46

0.600

0.56

-167.02

11.22

90.08

0.04

47.13

0.30

-115.48

0.83

24.40

0.700

0.57

-172.39

9.70

85.86

0.04

48.18

0.28

-121.83

0.88

23.43

0.800

0.57

-176.68

8.57

82.27

0.05

49.01

0.27

-125.22

0.92

22.51

0.900

0.57

179.14

7.66

78.87

0.05

49.82

0.27

-128.89

0.96

21.72

1.000

0.57

176.07

6.93

75.71

0.06

50.22

0.26

-131.89

0.98

20.95

1.500

0.57

161.30

4.70

61.65

0.08

49.69

0.27

-142.80

1.07

16.35

1.800

0.57

153.82

3.96

53.96

0.09

48.26

0.27

-147.21

1.09

14.70

1.900

0.57

151.23

3.76

51.43

0.09

47.59

0.28

-148.33

1.09

14.25

2.000

0.57

148.83

3.58

48.96

0.10

46.86

0.28

-149.67

1.09

13.81

2.500

0.57

136.19

2.90

36.74

0.12

42.26

0.31

-154.80

1.09

12.03

3.000

0.57

123.25

2.44

24.91

0.14

36.84

0.34

-159.87

1.08

10.71

3.500

0.58

109.78

2.10

13.41

0.16

30.78

0.37

-164.45

1.06

9.71

4.000

0.60

96.93

1.84

2.30

0.18

24.27

0.40

-170.06

1.04

9.03

4.500

0.62

85.43

1.63

-8.43

0.19

17.67

0.43

-176.72

1.01

8.78

5.000

0.64

75.45

1.46

-18.79

0.21

11.05

0.47

175.39

0.98

8.46

5.500

0.65

66.54

1.32

-28.80

0.22

4.47

0.50

166.91

0.95

7.72

6.000

0.67

57.90

1.19

-38.45

0.24

-2.21

0.53

158.44

0.93

7.05

NE678M04

VC = 3 V, IC = 30 mA

TYPICAL SCATTERING PARAMETERS (TA = 25°C)

Note:

1. Gain Calculations:

MAG =

|S21|

|S12|

K - 1

).

2

(K –

∆ = S11 S22 - S21 S12

When K

≥ 1, MAG is undefined and MSG values are used. MSG = |S

21

|

|S12|

, K = 1 + | ∆ | - |S

11

| - |S22|

2

2 |S12 S21|

,

MAG = Maximum Available Gain

MSG = Maximum Stable Gain

j50

j100

j25

j10

0

-j10

-j25

-j50

-j100

10

50 100

25

S22

S11

+90º

+45º

+0º

10 20 30

-45º

-90º

-135º

+180º

+135º

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