2SA1978 datasheet(7/5 Pages) NEC

Part #	2SA1978

Description	PNP EPITAXIAL SILICON TRANSISTOR MICROWAVE AMPLIFIER

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Manufacturer	NEC [NEC]

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2SA1978

S-PARAMETER

(VCE = 3 V, IC = 5 mA, Zo = 50

Ω)

fS11

S21

S12

S22

MHz

MAG

ANG

MAG

ANG

MAG

ANG

MAG

ANG

100

0.558

− 37.1

11.0

153.

0.0288

74.3

915

− 16.3

200

0.485

− 67.9

9.13

133.

0.0467

83.0

784

− 27.0

300

0.423

− 92.5

7.48

119.

0.0611

58.1

670

− 33.0

400

0.381

− 111

6.21

109.

0.0703

56.5

590

− 36.0

500

0.353

− 127

5.18

101.

0.0801

56.1

531

− 37.4

600

0.339

− 140

4.47

95.1

0.0880

56.7

490

− 38.1

700

0.329

− 151

3.92

89.9

0.0938

57.5

461

− 33.8

800

0.325

− 160

3.48

84.9

0.104

57.9

438

− 39.8

900

0.325

− 169

3.14

80.7

0.113

58.7

419

− 40.4

1000

0.326

− 176

2.87

76.9

0.122

59.5

408

− 41.6

1100

0.330

177

2.64

73.0

0.131

60.5

393

− 42.8

1200

0.335

170

2.44

69.6

0.140

61.2

386

− 44.0

1300

0.339

165

2.28

66.5

0.150

61.3

377

− 45.9

1400

0.345

160

2.13

63.3

0.160

61.9

366

− 47.5

1500

0.351

155

2.01

60.2

0.170

61.9

362

− 49.0

1600

0.360

151

1.90

57.4

0.181

61.8

354

− 51.0

1700

0.366

147

1.81

54.6

0.191

61.8

349

− 53.0

1800

0.374

143

1.72

52.0

0.202

61.7

344

− 55.5

1900

0.382

140

1.65

49.5

0.213

61.3

337

− 58.1

2000

0.390

137

1.58

47.0

0.223

61.0

334

− 60.4

2100

0.396

133

1.52

44.6

0.233

60.4

328

− 63.0

2200

0.404

130

1.46

42.4

0.243

60.2

321

− 65.9

2300

0.413

127

1.41

40.2

0.251

59.4

318

− 68.3

2400

0.418

125

1.36

38.0

0.273

58.9

314

− 72.1

2500

0.427

122

1.32

35.9

0.255

58.2

303

− 74.8

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