General Purpose Transistors
NPN Silicon
3
1
2
2SC2412K*LT1
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–1.4
–1.6
T A = 100°C
25°C
– 55°C
50
20
1050
21
0.5
0.20.1
0.4
0.8
1.2
1.6
2.0
T A = 25°C
100
80
60
40
20
0I C , C O L L E C T O R C U R R E N T (m A )
Fig.1 Grounded emitter propagation characteristics
Fig.2 Grounded emitter output characteristics( )
Fig.3 Grounded emitter output characteristics( )
Fig.4 DC current gain vs. collector current ( )
Fig.5 DC current gain vs. collector current ( )
Fig.6 Collector-emitter saturation voltage vs.
collector current
V CE = 6 V
V BE , BASE TO EMITTER VOLTAGE(V)
I C , C O L L E C T O R C U R R E N T (m A )
V CE ,
COLLECTOR TO EMITTER VOLTAGE (V)
4
8
12
16
20
10
8
6
4
2
I C , C O L L E C T O R C U R R E N T (m A )
V CE ,
COLLECTOR TO EMITTER VOLTAGE (V)500
200
100
50
20
10
h F E , D C C U R R E N T G A I N
I C , COLLECTOR CURRENT (mA)
0.20.5125102050100
200
500
200
100
50
20
10h F E , D C C U R R E N T G A I N
I C , COLLECTOR CURRENT
(mA)
0.5
0.2
0.1
0.05
0.02
0.01
V C E (s a t ), C O L L E C T O R S A T U R A T I O N V O L T A G E (V )
I C , COLLECTOR CURRENT (mA)
0.50mA
0.2
0.5
1
2
5
10
20
50
100
200
0.2
0.5
1
2
5
10
20
50
100
200
Fig.8 Collector-emitter saturation voltage vs.
collector current ( )
V
C
E
(
s
a
t
)
,
C
O
L
L
E
C
T
O
R
S
A
T
U
R
A
T
I
O
N
V
O
L
T
A
G
E
(
V
)
I
C
, COLLECTOR CURRENT (mA)
0.20.5
125102050100
2S2412K*LT1
Fig.9 Gain bandwidth product vs. emitter current
500
200
100
50
f
r
,
T
R
A
N
S
I
T
I
O
N
F
R
E
Q
U
E
N
C
Y
(
M
H
z
)
I
E
, EMITTER CURRENT (mA)
–0.5–1–2–5–10–20–50–100
Fig.10 Collector output capacitance vs.collector-base voltage
Emitter inputcapacitance vs. emitter-base voltage
20
10
5
2
1
C
o
b
,
C
O
L
L
E
C
T
O
R
O
U
T
P
U
T
C
A
P
A
C
I
T
A
N
C
E
(
p
F
)
C
i
b
,
E
M
I
T
T
E
R
I
N
P
U
T
C
A
P
A
C
I
T
A
N
C
E
(
p
F
)
V
CB
, COLLECTOR TO BASE VOLTAGE (V)
V
EB
, EMITTER TO BASE VOLTAGE (V)
0.20.5125102050
Fig.7 Collector-emitter saturation voltage vs.
collector current ( )
0.5
0.2
0.1
0.05
0.02
0.01
V
C
E
(
s
a
t
)
,
C
O
L
L
E
C
T
O
R
S
A
T
U
R
A
T
I
O
N
V
O
L
T
A
G
E
(
V
)
I
C
, COLLECTOR CURRENT (mA)
0.20.5125102050100200
0.5
0.2
0.1
0.05
0.02
0.01
Fig.11 Base-collector time constant vs.emitter current
200
100
50
20
10
C
c
-
r
b
b
,
B
A
S
E
C
O
L
L
E
C
T
O
R
T
I
M
E
C
O
N
S
T
A
N
T
(
p
s
)
I
E
, EMITTER CURRENT (mA)
–0.2–0.5–1–2–5–10