ROHM 2SC4725_09

High-Frequency Amplifier Transistor (20V, 50mA, 1.5GHz)
2SC5661 / 2SC4725 / 2SC4082 / 2SC3837K
Dimensions (Unit : mm)
Features
1) High transition frequency. (Typ. fT = 1.5GHz)
2) Small rbb’Cc and high gain. (Typ. 6ps)
3) Small NF.
2SC5661
Packaging specifications and hFE
Type
2SC5661
2SC4725
2SC4082
2SC3837K
Package
hFE
VMT3
EMT3
NP
AC∗
UMT3
NP
1C∗
SMT3
NP
AC∗
NP
AC∗
Marking
Code
T2L
TL
T106
T146
Basic ordering unit
(pieces)
8000
3000
3000
3000
(1) Base
(2) Emitter
(3) Collector
ROHM : VMT3
2SC4725
∗ Denotes hFE
(1) Emitter
(2) Base
(3) Collector
ROHM : EMT3
EIAJ : SC-75A
 Absolute maximum ratings (Ta=25C)
Parameter
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
2SC5661, 2SC4725
Collector power
dissipation
2SC4082, 2SC3837K
Junction temperature
Storage temperature
Symbol
VCBO
VCEO
VEBO
IC
PC
Tj
Tstg
2SC4082
Limits
30
20
3
50
0.15
0.2
150
−55 to +150
Unit
V
V
V
mA
(1) Emitter
(2) Base
(3) Collector
ROHM : UMT3
EIAJ : SC-70
W
Each lead has same dimensions
°C
°C
2SC3837K
2.9
1.1
0.4
0.8
1.6
2.8
(3)
(2)
ROHM : SMT3
EIAJ : SC-59
0.15
1.9
0.3Min.
(1)
0.95 0.95
(1) Emitter
(2) Base
(3) Collector
Each lead has same dimensions
Electrical characteristics (Ta=25C)
Parameter
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Symbol
Min.
Typ.
Max.
Unit
BVCBO
BVCEO
30
20
3
−
−
−
−
−
−
−
−
−
−
V
V
V
μA
IC = 10μA
IC = 1mA
μA
VEB = 2V
−
−
BVEBO
ICBO
IEBO
VCE(sat)
DC current transfer ratio
hFE
Transition frequency
Output capacitance
Cob
−
82
600
−
rbb'·Cc
NF
−
−
Collector-emitter saturation voltage
Collector-base time constant
Noise factor
fT
0.5
0.5
1500
0.9
0.5
180
−
1.5
V
−
MHz
pF
6
4.5
13
−
ps
dB
Conditions
IE = 10μA
VCB = 15V
IC/IB = 20mA/4mA
VCE/IC = 10V/10mA
VCE = 10V , IE = −10mA , f = 200MHz
VCB = 10V , IE = 0A , f = 1MHz
VCB = 10V , IC = 10mA , f = 31.8MHz
VCE = 12V , IC = 2mA , f = 200MHz , Rg = 50Ω
This product might cause chip aging and breakdown under the large electrified environment.
Please consider to design ESD protection circuit.
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c 2009 ROHM Co., Ltd. All rights reserved.
○
1/3
2009.12 - Rev.C
2SC5661 / 2SC4725 / 2SC4082 / 2SC3837K
Data Sheet
200
100
50
20
10
0.1 0.2
0.5
1
2
5
10 20
50
5.0
500
Ta=25°C
IC/IB=5
200
100
50
20
10
COLLECTOR TO BASE TIME CONSTANT : Cc rbb' (ps)
1000
500
200
−1 −2
−5
−10 −20
−50
2
5
10 20
2
5
10
20
0.5
1
2
5
10 20
Fig.3 Capacitance vs. reverse bias voltage
10
5
2
Ta=25°C
VCE=10V
f=31.8MHz
1
0.1 0.2
0.5
1
2
5
50
COLLECTOR TO BASE VOLTAGE : VCB (V)
10 20
Ta=25°C
VCE=10V
IC=10mA
20
15
10
5
0
0.1
0.2
50
0.5
1
2
5
10
FREQUENCY : f (GHz)
Fig.6 Insertion gain vs. frequency
Ta=25°C
IC=2mA
f=200MHz
NOISE FIGURE : NF(dB)
25
Ta=25°C
VCE=12V
f=200MHz
2
5
1
0.1 0.2
50
Fig.5 Collector to base time constance
vs. collector current
INSERTION GAIN : IS21el (dB)
10
0.5
0.2
25
30
Ta=25°C
VCE=12V
f=200MHz
15
0
Cre
COLLECTOR CURRENT : IC (mA)
2
INSERTION GAIN : IS21el (dB)
1
20
Fig.4 Gain bandwidth product vs. emitter current
20
0.5
50
EMITTER CURRENT : IE (mA)
25
Cob
1.0
2
TRANSITION FREQUENCY : fT (MHz)
2000
−0.5
0.5
Fig.2 Collector-emitter saturation voltage
vs. collector current
Ta=25°C
VCE=10V
−0.1 −0.2
2.0
COLLECTOR CURRENT : IC (mA)
Fig.1 DC current gain vs. collector current
100
Ta=25°C
f=1MHz
IE=0A
0.1
0.1 0.2
COLLECTOR CURRENT : IC (mA)
5000
OUTPUT CAPACITANCE :CoB (pF)
FEEDBACK CAPACITANCE :Cre (pF)
Ta=25°C
VCE=10V
INSERTION GAIN : IS21el (dB)
DC CURRENT TRANSFER RATIO :hFE
500
COLLECTOR SATURATION VOLTAGE :VCE(sat) (mV)
Electrical characteristic curves
50
COLLECTOR CURRENT : Ic (mA)
Fig.7 Insertion gain vs. collector current
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c 2009 ROHM Co., Ltd. All rights reserved.
○
20
15
10
20
10
5
0
0
2
4
6
8
10
12
COLLECTOR TO EMITTER VOLTAGE : VCE (V)
Fig.8 Insertion gain vs. collector voltage
2/3
0
0.1 0.2
0.5
1
2
5
10 20
50
COLLECTOR CURRENT : IC (mA)
Fig.9 Noise factor vs. collector current
2009.12 - Rev.C
2SC5661 / 2SC4725 / 2SC4082 / 2SC3837K
30
Ta=25°C
IC=2mA
f=200MHz
25
NOISE FIGURE : NF(dB)
Data Sheet
20
15
10
5
0
0
2
4
6
8
10
12
COLLECTOR TO EMITTER VOLTAGE : VCE (V)
Fig.10 Noise factor vs. collector voltage
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c 2009 ROHM Co., Ltd. All rights reserved.
○
3/3
2009.12 - Rev.C
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