2N4401BU Datasheet, PDF (3/7 Pages) Fairchild Semiconductor – This device is designed for use as a medium power amplifier and switch requiring collector currents up to 500 mA

Typical Characteristics
NPN General Purpose Amplifier
(continued)
Typical Pulsed Current Gain
vs Collector Current
500
V _CE = 5V
400
125 °C
300
200
25 °C
100
- 40 °C
0
0.1 0.3
1
3
10 30 100 300
I _C - COLLECTOR CURRENT (mA)
Base-Emitter Saturation
Voltage vs Collector Current
1 ^{β = 10}
- 40 °C
0.8
25 °C
125 °C
0.6
0.4
1
10
100
500
I _C - COLLECTOR CURRENT (mA)
Collector-Cutoff Current
vs Ambient Temperature
500
100
V_CB= 40V
10
1
0.1
25
50
75
100
125
150
T_A - AMBIENT TEMPERATURE (°C)
Collector-Emitter Saturation
Voltage vs Collector Current
0.4
β = 10
0.3
0.2
0.1
1
125 °C
25 °C
- 40 °C
10
100
500
I _C - COLLECTOR CURRENT (mA)
Base-Emitter ON Voltage vs
Collector Current
1
V_CE = 5V
0.8
- 40 °C
25 °C
0.6
125 °C
0.4
0.2
0.1
1
10
25
I _C - COLLECTOR CURRENT (mA)
Emitter Transition and Output
Capacitance vs Reverse Bias Voltage
20
f = 1 MHz
16
12
C_te
8
C _ob
4
0.1
1
10
100
REVERSE BIAS VOLTAGE (V)