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2N4123
NPN General Purpose Amplifier
(continued)
Typical Characteristics (continued)
Storage Time vs Collector Current
1 10 100
5
10
100
500
I - COLLECTOR CURRENT (mA)
t - STORAGE TIME (ns)
I = I =
B1
C
B2
I
c
10
S
T = 125°C
T = 25°C
J
J
Fall Time vs Collector Current
1 10 100
5
10
100
500
I - COLLECTOR CURRENT (mA)
t - FALL TIME (ns)
I = I =
B1
C
B2
I
c
10
V = 40V
CC
f
T = 125°C
T = 25°C
J
J
Current Gain
0.1 1 10
10
100
500
I - COLLECTOR CURRENT (mA)
h - CURRENT GAIN
V = 10 V
CE
C
fe
f = 1.0 kHz
T = 25 C
A
o
Output Admittance
0.1 1 10
1
10
100
I - COLLECTOR CURRENT (mA)
h - OUTPUT ADMITTANCE ( mhos)
V = 10 V
CE
C
oe
f = 1.0 kHz
T = 25 C
A
o
µ
Input Impedance
0.1 1 10
0.1
1
10
100
I - COLLECTOR CURRENT (mA)
h - INPUT IMPEDANCE (k )
V = 10 V
CE
C
ie
f = 1.0 kHz
T = 25 C
A
o
Ω
Voltage Feedback Ratio
0.1 1 10
1
2
3
4
5
7
10
I - COLLECTOR CURRENT (mA)
h - VOLTAGE FEEDBACK RATIO (x10 )
V = 10 V
CE
C
re
f = 1.0 kHz
T = 25 C
A
o
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