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2N4123 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. 2N4123
Description  General Purpose Transistors NPN Silicon
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

2N4123 Datasheet(HTML) 3 Page - ON Semiconductor

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2N4123, 2N4124
http://onsemi.com
3
Figure 1. Capacitance
REVERSE BIAS VOLTAGE (VOLTS)
2.0
3.0
5.0
7.0
10
1.0
0.1
Figure 2. Switching Times
IC, COLLECTOR CURRENT (mA)
200
1.0
100
50
30
20
70
10.0
5.0
7.0
2.0 3.0
5.0 7.0 10
20 30
50 70 100
200
1.0
2.0 3.0 5.0 7.0 10
20 30 40
0.2 0.3 0.5 0.7
Cibo
Cobo
ts
td
tr
tf
VCC = 3 V
IC/IB = 10
VEB(off) = 0.5 V
Figure 3. Frequency Variations
f, FREQUENCY (kHz)
4
6
8
10
12
2
0.1
Figure 4. Source Resistance
RS, SOURCE RESISTANCE (kW)
0
12
4
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 kHz
IC = 1 mA
IC = 0.5 mA
IC = 50 mA
IC = 100 mA
SOURCE RESISTANCE = 200 W
IC = 1 mA
SOURCE RESISTANCE = 200 W
IC = 0.5 mA
SOURCE RESISTANCE = 500 W
IC = 100 mA
SOURCE RESISTANCE = 1 kW
IC = 50 mA
AUDIO SMALL−SIGNAL CHARACTERISTICS
NOISE FIGURE
(VCE = 5 Vdc, TA = 25°C)
Bandwidth = 1.0 Hz


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