2N3903_07 Datasheet, PDF (5/7 Pages) ON Semiconductor – General Purpose Transistors NPN Silicon

2N3903, 2N3904
TYPICAL AUDIO SMALL−SIGNAL CHARACTERISTICS
NOISE FIGURE VARIATIONS
(V_CE = 5.0 Vdc, T_A = 25°C, Bandwidth = 1.0 Hz)
12
SOURCE RESISTANCE = 200 W
10
I_C = 1.0 mA
14
12 ^{f = 1.0 kHz IC = 1.0 mA}
8
SOURCE RESISTANCE = 200 W
I_C = 0.5 mA
6
SOURCE RESISTANCE = 1.0 k
I_C = 50 mA
4
10
I_C = 0.5 mA
8
6
4
I_C = 50 mA
I_C = 100 mA
2 _{SOURCE RESISTANCE = 500 W}
I_C = 100 mA
0
0.1 0.2 0.4
1.0 2.0 4.0
10 20 40 100
f, FREQUENCY (kHz)
2
0
0.1 0.2 0.4 1.0 2.0 4.0 10 20 40 100
R_S, SOURCE RESISTANCE (k OHMS)
Figure 9.
Figure 10.
h PARAMETERS
(V_CE = 10 Vdc, f = 1.0 kHz, T_A = 25°C)
300
100
50
200
20
100
10
70
5
50
2
30
0.1
0.2 0.3 0.5
1.0
2.0 3.0 5.0
10
I_C, COLLECTOR CURRENT (mA)
Figure 11. Current Gain
1
0.1
0.2 0.3 0.5
1.0
2.0 3.0 5.0
10
I_C, COLLECTOR CURRENT (mA)
Figure 12. Output Admittance
20
10
5.0
2.0
1.0
0.5
0.2
0.1
0.2 0.3 0.5
1.0
2.0 3.0 5.0
10
I_C, COLLECTOR CURRENT (mA)
Figure 13. Input Impedance
10
7.0
5.0
3.0
2.0
1.0
0.7
0.5
0.1
0.2 0.3 0.5
1.0
2.0 3.0 5.0
10
I_C, COLLECTOR CURRENT (mA)
Figure 14. Voltage Feedback Ratio
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