2SC5661 / 2SC4725 / 2SC4082 / 2SC3837K
Transistors
1/1
High-Frequency Amplifier Transistor
(18V, 50mA, 1.5GHz)
2SC5661 / 2SC4725 / 2SC4082 / 2SC3837K
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!
!
!
Features
1) High transition frequency. (Typ. f
T
= 1.5GHz)
2) Small rbb'
Cc
and high gain. (Typ. 6ps)
3) Small NF.
!
!
!
!
Absolute maximum ratings (Ta=25
C)
Parameter
Symbol
V
CBO
V
CEO
V
EBO
I
C
P
C
Tj
Tstg
Limits
30
18
3
50
0.2
150
-
55~
+
150
Unit
V
V
V
mA
0.15
2SC4082, 2SC3837K
2SC5661, 2SC4725
W
C
C
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power
dissipation
Junction temperature
Storage temperature
!
!
!
!
Packaging specifications and h
FE
Type
2SC4725
EMT3
NP
AC
TL
3000
2SC5661
VMT3
NP
AC
T2L
8000
2SC4082
UMT3
NP
1C
T106
3000
2SC3837K
SMT3
NP
AC
T146
3000
Denotes h
FE
Package
h
FE
Marking
Code
Basic ordering unit
(pieces)
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!
!
!
External dimensions (Units : mm)
(2) Base
(3) Collector
(1) Emitter
(3) Collector
(1) Emitter
(2) Base
(3) Collector
(1) Emitter
(2) Base
Each lead has same dimensions
Each lead has same dimensions
0.7
0.15
0.1Min.
0.55
0to0.1
0.2
1.6
1.6
1.0
0.3
0.8
(2)
0.5
0.5
(3)
0.2
(1)
2.0
1.25
2.1
0.3
0.15
0to0.1
0.1to0.4
( 3
)
0.9
0.7
0.2
0.65
( 2
)
1.3
( 1
)
0.65
0.8
0.15
0to0.1
0.3to0.6
1.1
( 2
)
( 1
)
2.8
1.6
0.4
( 3
)
2.9
1.9
0.95
0.95
2SC4725
2SC4082
2SC3837K
2SC5661
ROHM : VMT3
ROHM : EMT3
EIAJ : SC-75A
ROHM : UMT3
EIAJ : SC-70
ROHM : SMT3
EIAJ : SC-59
(1) Base
(2) Emitter
(3) Collector
0to0.1
(3)
0.32
0.8
1.2
0.13
0.5
0.22
0.4
0.4
1.2
0.8
0.2
0.15Max.
0.2
(2)
(1)
!
!
!
!
Electrical characteristics (Ta=25
C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
BV
CBO
BV
CEO
BV
EBO
I
CBO
I
EBO
h
FE
f
T
Cob
rbb'Cc
NF
30
18
3
-
-
56
600
-
-
-
-
-
-
-
1500
0.9
-
-
-
0.5
0.5
180
-
1.5
V
V
V
A
A
-
MHz
pF
I
C
=
10
A
I
C
=
1mA
I
E
=
10
A
V
CB
=
10V
V
EB
=
2V
V
CE(sat)
-
-
0.5
V
I
C
/I
B
=
20mA/4mA
V
CE
/I
C
=
10V/10mA
V
CB
=
10V , I
C
=
10mA , f
=
200MHz
V
CB
=
10V , I
E
=
0A , f
=
1MHz
V
CB
=
10V , I
C
=
10mA , f
=
31.8MHz
V
CE
=
12V , I
C
=
2mA , f
=
200MHz , Rg
=
50
-
6
13
ps
-
4.5
-
dB
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
DC current transfer ratio
Transition frequency
Output capacitance
Collector-emitter saturation voltage
Collector-base time constant
Noise factor
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