Transistor
2SD661, 2SD661A
Silicon NPN epitaxial planer type
For low-frequency and low-noise amplification
Unit: mm
6.9±0.1
1.5
2.5±0.1
1.0
1.0
2.4±0.2 2.0±0.2 3.5±0.1
s
q
q
q
Features
Low noise voltage NV.
High foward current transfer ratio h
FE
.
M type package allowing easy automatic and manual insertion as
well as stand-alone fixing to the printed circuit board.
(Ta=25˚C)
Ratings
35
55
35
55
7
200
100
400
150
–55 ~ +150
Unit
1.5 R0.9
R0.9
0.4
1.0±0.1
R
0.
0.85
Parameter
Collector to
base voltage
Collector to
2SD661
2SD661A
2SD661
Symbol
V
CBO
V
CEO
V
EBO
I
CP
I
C
P
C
T
j
T
stg
3
2
1
V
2.5
2.5
emitter voltage 2SD661A
Emitter to base voltage
Peak collector current
Collector current
Collector power dissipation
Junction temperature
Storage temperature
V
V
mA
mA
mW
˚C
˚C
1:Base
2:Collector
3:Emitter
EIAJ:SC–71
M Type Mold Package
s
Electrical Characteristics
Parameter
Collector cutoff current
Collector to base
voltage
Collector to emitter
voltage
2SD661
2SD661A
2SD661
2SD661A
(Ta=25˚C)
Symbol
I
CBO
I
CEO
V
CBO
V
CEO
V
EBO
h
FE
f
T
NV
*
1.25±0.05
s
Absolute Maximum Ratings
0.55±0.1
0.45±0.05
Conditions
V
CB
= 20V, I
E
= 0
V
CE
= 20V, I
B
= 0
I
C
= 10µA, I
E
= 0
I
C
= 2mA, I
B
= 0
I
E
= 10µA, I
C
= 0
V
CE
= 10V, I
C
= 2mA
I
C
= 100mA, I
B
= 10mA
V
CB
= 10V, I
E
= –2mA, f = 200MHz
V
CE
= 10V, I
C
= 1mA, G
V
= 80dB
R
g
= 100kΩ, Function = FLAT
min
typ
max
0.1
1
4.1±0.2
4.5±0.1
7
Unit
µA
µA
V
35
55
35
55
7
210
650
1
200
150
V
V
Emitter to base voltage
Forward current transfer ratio
Collector to emitter saturation voltage
Transition frequency
Noise voltage
*
h
V
CE(sat)
V
MHz
mV
FE
Rank classification
R
210 ~ 340
S
290 ~ 460
T
360 ~ 650
h
FE
Rank
1
Transistor
P
C
— Ta
500
160
140
2SD661, 2SD661A
I
C
— V
CE
Ta=25˚C
160
V
CE
=5V
Ta=25˚C
140
I
C
— I
B
Collector power dissipation P
C
(mW)
Collector current I
C
(mA)
120
100
Collector current I
C
(mA)
400
I
B
=350µA
300µA
250µA
120
100
80
60
40
20
0
300
80
60
40
20
200µA
150µA
100µA
50µA
200
100
0
0
20
40
60
80 100 120 140 160
0
0
2
4
6
8
10
12
0
0.1
0.2
0.3
0.4
0.5
Ambient temperature Ta (˚C)
Collector to emitter voltage V
CE
(V)
Base current I
B
(mA)
I
B
— V
BE
800
V
CE
=5V
Ta=25˚C
700
100
120
I
C
— V
BE
Collector to emitter saturation voltage V
CE(sat)
(V)
100
30
10
3
1
0.3
25˚C
V
CE
=5V
V
CE(sat)
— I
C
I
C
/I
B
=10
Base current I
B
(
µA
)
600
500
400
300
200
100
0
0
0.2
0.4
0.6
0.8
1.0
Collector current I
C
(mA)
Ta=75˚C
80
–25˚C
60
40
Ta=75˚C
0.1
0.03
0.01
0.1
25˚C
–25˚C
20
0
0
0.4
0.8
1.2
1.6
2.0
0.3
1
3
10
30
100
Base to emitter voltage V
BE
(V)
Base to emitter voltage V
BE
(V)
Collector current I
C
(mA)
h
FE
— I
C
720
V
CE
=5V
500
f
T
— I
E
Collector output capacitance C
ob
(pF)
V
CB
=5V
Ta=25˚C
20
C
ob
— V
CB
I
E
=0
f=1MHz
Ta=25˚C
16
Forward current transfer ratio h
FE
600
Ta=75˚C
480
Transition frequency f
T
(MHz)
400
25˚C
300
12
360
–25˚C
200
8
240
120
100
4
0
0.1
0.3
1
3
10
30
100
0
– 0.1 – 0.3
–1
–3
–10
–30
–100
0
0.1
0.3
1
3
10
30
100
Collector current I
C
(mA)
Emitter current I
E
(mA)
Collector to base voltage V
CB
(V)
2
Transistor
NV — V
CE
160
140
I
C
=1mA
G
V
=80dB
Function=FLAT
300
R
g
=100kΩ
2SD661, 2SD661A
NV — V
CE
160
140
V
CE
=10V
G
V
=80dB
Function=FLAT
NV — I
C
Noise voltage NV (mV)
Noise voltage NV (mV)
120
R
g
=100kΩ
100
80
60
40
20
0
1
3
10
30
100
22kΩ
Noise voltage NV (mV)
240
I
C
=1mA
G
V
=80dB
Function=RIAA
180
120
100
80
60
40
4.7kΩ
20
0
0.01
R
g
=100kΩ
120
22kΩ
60
4.7kΩ
22kΩ
4.7kΩ
0
1
3
10
30
100
0.03
0.1
0.3
1
Collector to emitter voltage V
CE
(V)
Collector to emitter voltage V
CE
(V)
Collector current I
C
(mA)
NV — I
C
300
V
CE
=10V
G
V
=80dB
Function=RIAA
160
140
NV — R
g
300
V
CE
=10V
G
V
=80dB
Function=FLAT
NV — R
g
V
CE
=10V
G
V
=80dB
Function=RIAA
Noise voltage NV (mV)
Noise voltage NV (mV)
120
100
80
60
I
C
=1mA
40
0.5mA
20
0
0.1mA
Noise voltage NV (mV)
240
240
I
C
=1mA
180
180
R
g
=100kΩ
120
22kΩ
60
4.7kΩ
120
0.5mA
60
0.1mA
0
0.01
0
1
3
10
30
100
1
3
10
30
100
0.03
0.1
0.3
1
Collector current I
C
(mA)
Signal source resistance R
g
(kΩ)
Signal source resistance R
g
(kΩ)
3