Fairchild 2N4123 - Manual (Page 5)

2N
41
23
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
-
S
T
O
R
A
G
E
T
IM
E
(n
s
)
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
-
F
A
L
L
T
IM
E
(n
s
)
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
- CUR
R
E
NT
GA
IN
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
-
O
U
TPU
T
A
D
M
IT
T
A
N
C
E
(
m
h
os
)
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
-
IN
PU
T
I
M
PED
AN
C
E
(
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
-
V
O
LTA
G
E
F
E
E
D
B
A
C
K
R
A
T
IO
(
x
1
0
)
V = 10 V
CE
C
re
f = 1.0 kHz
T = 25 C
A
o
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