2N3903 datasheet(6/8 Pages) ONSEMI

No. de pieza	2N3903

Descripción Electrónicos	General Purpose Transistors

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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2N3903, 2N3904

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TYPICAL AUDIO SMALL−SIGNAL CHARACTERISTICS

NOISE FIGURE VARIATIONS

(VCE = 5.0 Vdc, TA = 25°C, Bandwidth = 1.0 Hz)

Figure 9.

f, FREQUENCY (kHz)

4

6

8

10

12

2

0.1

Figure 10.

RS, SOURCE RESISTANCE (k OHMS)

0

1.0

2.0

4.0

10

20

40

0.2

0.4

0

100

4

6

8

10

12

2

14

0.1

1.0

2.0

4.0

10

20

40

0.2

0.4

100

f = 1.0 kHz

IC = 1.0 mA

IC = 0.5 mA

IC = 50 mA

IC = 100 mA

SOURCE RESISTANCE = 200

W

IC = 1.0 mA

SOURCE RESISTANCE = 200

W

IC = 0.5 mA

SOURCE RESISTANCE = 500

W

IC = 100 mA

SOURCE RESISTANCE = 1.0 k

IC = 50 mA

Figure 11. Current Gain

IC, COLLECTOR CURRENT (mA)

70

100

200

300

50

Figure 12. Output Admittance

IC, COLLECTOR CURRENT (mA)

Figure 13. Input Impedance

IC, COLLECTOR CURRENT (mA)

Figure 14. Voltage Feedback Ratio

IC, COLLECTOR CURRENT (mA)

30

100

50

5

10

20

2.0

3.0

5.0

7.0

10

1.0

0.1

0.2

1.0

2.0

5.0

0.5

10

0.3

0.5

3.0

0.7

2.0

5.0

10

20

1.0

0.2

0.5

0.1

0.2

1.0

2.0

5.0

10

0.3

0.5

3.0

0.1

0.2

1.0

2.0

5.0

10

0.3

0.5

3.0

2

1

0.1

0.2

1.0

2.0

5.0

10

0.3

0.5

3.0

h PARAMETERS

(VCE = 10 Vdc, f = 1.0 kHz, TA = 25°C)

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