2SC2512
Silicon NPN Triple Diffused
Application
VHF Amplifier
VHF TV Tuner, Mixer
Outline
1. Base
2. Emitter
3. Collector
TO-92 (2)
3
2
1
2SC2512
2
Absolute Maximum Ratings (Ta = 25C)
Item
Symbol
Ratings
Unit
Collector to base voltage
V
CBO
30
V
Collector to emitter voltage
V
CEO
20
V
Emitter to base voltage
V
EBO
3
V
Collector current
I
C
50
mA
Collector power dissipation
P
C
300
mW
Junction temperature
Tj
150
C
Storage temperature
Tstg
55 to +150
C
Electrical Characteristics (Ta = 25C)
Item
Symbol
Min
Typ
Max
Unit
Test conditions
Collector to base breakdown
voltage
V
(BR)CBO
30
--
--
V
I
C
= 10
A, I
E
= 0
Collector to emitter breakdown
voltage
V
(BR)CEO
20
--
--
V
I
C
= 1 mA, R
BE
=
Emitter to base breakdown
voltage
V
(BR)EBO
3
--
--
V
I
E
= 10
A, I
C
= 0
Collector cutoff current
I
CBO
--
--
0.5
A
V
CB
= 10 V, I
E
= 0
Collector to emitter saturation
voltage
V
CE(sat)
--
--
1
V
I
C
= 20 mA, I
B
= 4 mA
DC current transfer ratio
h
FE
30
--
--
V
CE
= 10 V, I
C
= 10 mA
Reverse transfer capacitance
Cre
--
0.35
0.45
pF
V
CB
= 10 V, Emitter common,
f = 1 MHz
Gain bandwidth product
f
T
600
900
--
MHz
V
CE
= 10 V, I
C
= 10 mA
Base time constant
r
bb'
C
C
--
--
20
ps
V
CB
= 10 V, I
C
= 5 mA,
f = 31.8 MHz
Conversion gain
CG
16
20
--
dB
V
CC
= 12 V, I
C
= 2 mA,
f
in
= 200 MHz,
f
OSC
= 260 MHz,
f
out
= 60 MHz
Noise figure
NF
--
3.8
5.5
dB
V
CC
= 12 V, I
C
= 2 mA,
f
OSC
= 260 MHz, R
g
= 50
,
f
in
= 200 MHz
2SC2512
3
0
100
200
300
50
Ambient Temperature Ta (
C)
Collector Power Dissipation P
C
(mW)
Maximum Collector Dissipation Curve
100
150
0
40
20
80
60
100
1
2
5
Collector Current I
C
(mA)
DC Current Transfer Ratio h
FE
DC Current Transfer Ratio vs.
Collector Current
10
20
50
V
CE
= 10 V
0
400
200
800
600
1,000
1
2
5
Collector Current I
C
(mA)
Gain Bandwidth Product f
T
(MHz)
Gain Bandwidth Product vs.
Collector Current
10
20
50
V
CE
= 10 V
0.1
0.5
0.2
2
1.0
5
1
2
5
Collector to Base Voltage V
CB
(V)
Reverse Transfer Capacitance C
re
(pF)
Reverse Transfer Capacitance vs.
Collector to Base Voltage
10
20
50
f = 1 MHz
Emitter Common
2SC2512
4
10
18
14
26
22
30
0
2
4
Collector Current I
C
(mA)
Conversion Gain CG (dB)
Conversion Gain vs. Collector Current
6
8
10
V
CC
= 12 V
f
osc
= 260 MHz (0 dBm)
f
in
= 200 MHz
f
out
= 60 MHz
R
g
= 50
0
4
2
8
6
10
1
2
3
4
Collector Current I
C
(mA)
Noise Figure NF (dB)
Noise Figure vs. Collector Current
5
V
CC
= 12 V
f
osc
= 260 MHz (0 dBm)
f
in
= 200 MHz
R
g
= 50
0
4
2
8
6
10
15
5
CG
NF
Oscillating Injection Voltage V
inj
(dBm)
Noise Figure NF (dB)
10
30
20
Conversion Gain CG (dB)
Noise Figure, Conversion Gain vs.
Oscillating Injection Voltage
5
I
C
= 2 mA
V
CC
= 12 V
f
osc
= 260 MHz
f
in
= 200 MHz
R
g
= 50
2SC2512
5
Conversion Gain, Noise Figure Test Circuit
f
OSC
Input
Input
Output
Parts Specification
C
1
: 1.5 pF
C
2
: 57 pF
C
3
: 17 pF
C
4
: 1000 pF
C
5
: 2200 pF
C
6
: 22 pF
C
7
: 80 pF
C
8
: 18 pF
C
9
: 20 pF
R
1
: 330
(1/4 W)
R
2
: 560
(1/4 W)
L
1
:
0.8 mm Copper wire with Enamel 8 Turns
inside dia
3 mm
L
2
:
0.8 mm Copper wire with Enamel 5 Turns
inside dia
3 mm
L
3
:
0.5 mm Copper wire with Enamel 3.5 Turns
inside dia
3 mm
L
4
: Outside dia
5 mm used Ferrite Core,
0.2 mm
Copper wire with Enamel 6.5 Turns
L
5
:
0.2 mm Copper wire with Enamel 13 Turns
inside dia
5 mm
C
1
C
2
C
3
L
3
C
4
C
5
C
6
C
7
C
9
C
8
L
5
L
4
L
2
L
1
R
1
R
2
V
CC
V
BB
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