2SC4081UB
Transistors
General purpose small signal amplifier
(50V, 0.15A)
2SC4081UB
Applications
General purpose small signal amplifier
Dimensions
(Unit : mm)
UMT3F
2.0
Features
1) Low Cob.
Cob=2.0pF (Typ.)
2) Complements the 2SA4081.
2.1
1.25 0.425
0.32
(3)
0.9
0.425
Structure
NPN silicon epitaxial planar transistor
(1) Base
(2) Emitter
(3) Collector
(1)
(2)
0.13
0.65 0.65
1.3
Each lead has same dimensions
Abbreviated symbol :
B
Absolute maximum
(Ta=25°C)
Parameter
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Power dissipation
Junction temperature
Range of storage temperature
∗1
Pw=1ms Single pulse
∗2
Each terminal mounted on a recommended land
Symbol
V
CBO
V
CEO
V
EBO
I
C
I
CP
P
D
Tj
Tstg
∗1
∗2
Limits
60
50
7
150
200
200
150
−55
to
+150
Unit
V
V
V
mA
mA
mW
°C
°C
Electrical characteristics
(Ta=25°C)
Parameter
Collector-emitter breakdown voltage
Collector-base breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Collector-emitter saturation voltage
DC current gain
Transition frequency
Output capacitance
Symbol
BV
CEO
BV
CBO
BV
EBO
I
CBO
I
EBO
V
CE(sat)
h
FE
f
T
Cob
Min.
50
60
7
−
−
−
82
−
−
Typ.
−
−
−
−
−
−
−
180
2.0
Max.
−
−
−
100
100
400
560
−
3.5
Unit
V
V
V
nA
nA
mV
−
MHz
pF
I
C
=1mA
I
C
=50µA
I
E
=50µA
V
CB
=60V
V
EB
=7V
I
C
/I
B
=50mA/5mA
V
CE
=6V,
I
C
=1mA
V
CE
=12V,
I
E
=−2mA,
f=100MHz
V
CB
=12V,
I
E
=0A,
f=1MHz
Conditions
0.53
0.53
1/3
2SC4081UB
Transistors
h
FE
rank categories
Rank
h
FE
P
82 to 180
Q
120 to 270
R
180 to 390
S
270 to 560
Electrical characterristic curves
50
100
V
CE
=6V
COLLECTOR CURRENT : I
C
(mA)
Ta=25°C
COLLECTOR CURRENT : I
C
(mA)
COLLECTOR CURRENT : I
C
(mA)
20
10
5
Ta=100°C
25
°C
−5
5°C
80
0.50mA
mA
0.45
A
0.40m
0.35mA
0.30mA
10
Ta=25°C
30µA
27µA
8
24µA
21µA
60
0.25mA
0.20mA
6
18µA
15µA
2
1
0.5
0.2
0.1
0
40
0.15mA
0.10mA
4
12µA
9µA
20
0.05mA
I
B
=0A
0
0.4
0.8
1.2
1.6
2.0
2
6µA
3µA
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
BASE TO EMITTER VOLTAGE : V
BE
(V)
0
0
4
8
I
B
=0A
12
16
20
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
COLLECTOR TO EMITTER VOLTAGE : V
CE
(V)
Fig.1
Grounded emitter propagation
characteristics
Fig.2
Grounded emitter output
characteristics (
Ι
)
Fig.3
Grounded emitter output
characteristics (
ΙΙ
)
Ta=25°C
500
Ta=100°C
V
CE
=5V
3V
1V
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
500
V
CE
=5V
0.5
Ta=25°C
DC CURRENT GAIN : h
FE
200
DC CURRENT GAIN : h
FE
200
25°C
−55°C
0.2
I
C
/I
B
=50
20
10
100
100
0.1
0.05
50
50
0.02
20
10
0.2
20
10
0.2
0.5 1
2
5
10 20
50 100 200
0.5 1
2
5
10 20
50 100 200
0.01
0.2
0.5 1
2
5
10
20
50 100 200
COLLECTOR CURRENT : I
C
(mA)
COLLECTOR CURRENT : I
C
(mA)
COLLECTOR CURRENT : I
C
(mA)
Fig.4 DC current gain vs.
collector current (
Ι
)
Fig.5 DC current gain vs.
collector current (
ΙΙ
)
Fig. 6 Collector-emitter saturation
voltage vs. collector current
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
0.5
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
I
C
/I
B
=10
0.5
TRANSITION FREQUENCY : f
T
(MHz)
I
C
/I
B
=50
500
Ta=25°C
V
CE
=6V
0.2
Ta=100°C
25°C
−55°C
0.2
0.1
0.05
0.1
0.05
Ta=100°C
25°C
−55°C
200
0.02
100
0.02
0.01
0.2
0.5 1
2
5
10
20
50 100
0.01
0.2
0.5 1
2
5
10
20
50 100 200
50
−0.5 −1
−2
−5
−10 −20
−50 −100
COLLECTOR CURRENT : I
C
(mA)
COLLECTOR CURRENT : I
C
(mA)
EMITTER CURRENT : I
E
(mA)
Fig.7 Collector-emitter saturation
voltage vs. collector current (
Ι
)
Fig.8 Collector-emitter saturation
voltage vs. collector current (ΙΙ)
Fig.9 Gain bandwidth product vs.
emitter current
2/3
Appendix
Notes
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The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
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ROHM CO., LTD. is granted to any such buyer.
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