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2SC1907
Silicon NPN Epitaxial Planar
Application
UHF TV Tuner, Local oscillator
Outline
TO-92 (2)
3
2
1
1. Emitter
2. Collector
3. Base

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2SC1907
Absolute Maximum Ratings (Ta = 25°C)
Item
Collector to base voltage
Collector to emitter voltage
Emitter to base voltage
Collector current
Emitter current
Collector power dissipation
Junction temperature
Storage temperature
Symbol
VCBO
VCEO
VEBO
IC
IE
PC
Tj
Tstg
Ratings
30
19
2
50
–50
300
150
–55 to +150
Unit
V
V
V
mA
mA
mW
°C
°C
Electrical Characteristics (Ta = 25°C)
Item
Symbol Min
Collector to base breakdown
voltage
V(BR)CBO
30
Collector to emitter breakdown V(BR)CEO
voltage
19
Emitter to base breakdown
voltage
V(BR)EBO
2
Collector cutoff current
DC current transfer ratio
Collector to emitter saturation
voltage
I CBO
hFE
VCE(sat)
40
Collector output capacitance Cob
Gain bandwidth product
Base time constant
fT
rbb’ CC
900
Oscillation output power
Pout
Typ Max Unit Test conditions
— —V
IC = 10 µA, IE = 0
— —V
IC = 3 mA, RBE =
— —V
IE = 10 µA, IC = 0
0.5 µA
VCB = 10 V, IE = 0
——
VCE = 10 V, IC = 10 mA
0.2 1.0 V
IC = 20 mA, IB = 4 mA
1.0
1100
10
2.0
25
8—
pF
MHz
ps
mW
VCB = 10 V, IE = 0, f = 1 MHz
VCE = 10 V, IC = 10 mA
VCB = 10 V, IC = 10 mA,
f = 31.8 MHz
VCB = 10 V, IC = 10 mA,
f = 930 MHz
2

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Maximum Collector Dissipation Curve
300
200
100
0 50 100 150
Ambient Temperature Ta (°C)
Typical Transfer Caracteristics
20
VCE = 10 V
16
12
8
4
0 0.2 0.4 0.6 0.8 1.0
Base to Emitter Voltage VBE (V)
2SC1907
Typical Output Caracteristics
20 130 120
16 111000
90
80
12 70
60
8 50
40
30
4 20
IB = 10 µA
0 4 8 12 16 20
Collector to Emitter Voltage VCE (V)
DC Current Transfer Ratio vs.
Collector Current
200
VCE = 10 V
160
120
80
40
0
0.1 0.2
0.5 1.0 2 5 10 20
Collector Current IC (mA)
50
3

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2SC1907
1,200
Gain Bandwidth Product vs.
Collector Current
1,000 VCE = 10 V
800
600
400
200
0
0.2 0.5 1.0 2 5 10 20 50 100
Collector Current IC (mA)
Input Admittance Characteristics
0
1,200 MHz yib = gib+jbib
–10 1,000
900
800
–20
–30
–40
VCB = 10 V
Output end short
–50
600
IC = 5 mA
1510mmAA
400
–60
0
5 10 15 20 25
Input Conductance gib (mS)
30
Base Time Constant vs.
Collector Current
200
100
VCB = 10 V
f = 31.8 MHz
50
20
10
5
2
0.1 0.2
0.5 1.0 2
5
Collector Current IC (mA)
10
Reverse Transfer Admittance
Characteristics
yrb = grb+jbrb
400 MHz
0
–1
VCB = 10 V
Input end short
600
800
900
1,000
–2
–3
–4
–5
1,200
–6
–1.2 –1.0 –0.8 –0.6 –0.4 –0.2 0
Reverse Transfer Conductance grb (mS)
4

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Forward Transfer Admittance
Characteristics
60
yfb = gfb+jbfb
50 400 MHz
40 10 mA
5 mA 600
30
20
10
VCB = 10 V
Output end short
800
900
1,000
1,200
0
–30 –20 –10 0
10 20 30
Forward Transfer Conductance gfb (mS)
2SC1907
Output Admittance Characteristics
15
yob = gob+jbob
1,200
10 1,000
900
800
600
5 400 MHz
VCB = 10 V
Input end short
0 1.5 3.0 4.5 6.0 7.5
Output Conductance gob (mS)
5