2SC4081UB Datasheet, PDF (2/4 Pages) Rohm – General purpose small signal amplifier

Transistors
h_FE rank categories
Rank
P
hFE
82 to 180
Q
R
120 to 270 180 to 390
S
270 to 560
2SC4081UB
zElectrical characterristic curves
50
VCE=6V
20
10
5
2
1
0.5
0.2
0.1
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
BASE TO EMITTER VOLTAGE : VBE (V)
Fig.1 Grounded emitter propagation
characteristics
100 _Ta=25°C
80
60
40
20
0.50mA
00..4450mmAA
0.35mA
0.30mA
0.25mA
0.20mA
0.15mA
0.10mA
0.05mA
0
IB=0A
0
0.4
0.8
1.2 1.6
2.0
COLLECTOR TO EMITTER VOLTAGE : VCE (V)
Fig.2 Grounded emitter output
characteristics ( Ι )
10
Ta=25°C
8
30µA
27µA
24µA
21µA
6
18µA
15µA
4
12µA
9µA
6µA
2
3µA
0
IB=0A
0
4
8
12
16
20
COLLECTOR TO EMITTER VOLTAGE : VCE (V)
Fig.3 Grounded emitter output
characteristics ( ΙΙ )
500
Ta=25°C
200
100
50
VCE=5V
3V
1V
20
10
0.2 0.5 1 2 5 10 20 50 100 200
COLLECTOR CURRENT : IC (mA)
Fig.4 DC current gain vs.
collector current ( Ι )
500
0.5
Ta=100°C
VCE=5V
Ta=25°C
200
25°C
−55°C
100
0.2
IC/IB=50
0.1
20
10
0.05
50
0.02
20
10
0.2 0.5 1 2 5 10 20 50 100 200
COLLECTOR CURRENT : IC (mA)
0.01
0.2 0.5 1 2
5 10 20 50 100 200
COLLECTOR CURRENT : IC (mA)
Fig.5 DC current gain vs.
collector current ( ΙΙ )
Fig. 6 Collector-emitter saturation
voltage vs. collector current
0.5
0.2
Ta=100°C
0.1
25°C
−55°C
0.05
IC/IB=10
0.5
0.2
0.1
0.05
Ta=100°C
25°C
−55°C
IC/IB=50
500
200
Ta=25°C
VCE=6V
0.02
0.02
0.01
0.2 0.5 1 2 5 10 20 50 100 200
COLLECTOR CURRENT : IC (mA)
0.01
0.2
0.5 1 2 5 10 20 50 100
COLLECTOR CURRENT : IC (mA)
Fig.7 Collector-emitter saturation
Fig.8 Collector-emitter saturation
voltage vs. collector current ( Ι )
voltage vs. collector current (ΙΙ)
100
50
−0.5 −1 −2
−5 −10 −20 −50 −100
EMITTER CURRENT : IE (mA)
Fig.9 Gain bandwidth product vs.
emitter current
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