Page 1
Transistors
Power transistor (40V, 2A)
2SD1759 / 2SD1861
zFeatures
1) Darlington connection for high DC current gain.
2) Built-in 4kΩ resistor between base and emitter.
3) Complements the 2SB1183 / 2SB1239.
zEquivalent circuit
C
B
RBE 4kΩ
C
: Collector
B
E
: Base
: Emitter
E
zAbsolute maximum ratings (Ta=25°C)
Parameter
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power
dissipation
Junction temperature
Storage temperature
∗ Printed circuit board 1.7mm thick, collector plating 1cm2 or larger.
2SD1861
2SD1759
Symbol
V
V
V
Tstg
CBO
CER
EBO
I
C
P
C
Tj
Limits
40
40
5
2
1
1
10
150
−55 to +150
V(R
∗
W(T
zPackaging specifications and h
Type 2SD1759
Package
FE
h
Code
Basic ordering unit (pieces)
CPT3
1k to 200k
TL
2500
FE
2SD1861
ATV
1k to
TV2
2500
zElectrical characteristics (Ta=25°C)
Collector-base breakdown voltage
Parameter
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Collector-emitter saturation voltage
DC current
transfer ratio
2SD1759
2SD1861 1000
Transition frequency
Output capacitance
Symbol
CBO
BV
BV
CER
BV
EBO
I
CBO
I
EBO
V
CE(sat)
h
FE
f
T
Cob
Min. Typ. Max. Unit Conditions
40
40
5
−
−
−
1000
− 150 MHz VCE=6V , IE= −0.1A , f=100MHz
−
Unit
V
BE
=10kΩ)
V
A(DC)
W
C
=25°C)
°C
°C
−
−
−
−
−
1.5
0.8
20000
−
−−−−
11
zExternal dimensions (Unit : mm)
2SD1759
ROHM : CPT3
EIAJ : SC-63
2SD1861
ROHM : ATV
V
−
−
−
1
1
−
I
C
V
I
C
V
I
E
µA
V
µA
V
V
I
C/IB
−
V
pF
V
2SD1759 / 2SD1861
0.75
0.9
)
1
(
)
2.3
2
(
)
3
(
2.3
0.65
0.8Min.
1.0
0.5
2.5
6.8
0.65Max.
(2)
(3)
(1)
2.54
2.54
=50µA
=1mA , RBE=10kΩ
=50µA
CB
=24V
EB
=4V
=0.6A/1.2mA
CE/IC
=3V/0.5A
CB
=10V , IE=0A , f=1MHz
5.5
0.9
1.5
9.5
0.5
(1) Base
(2) Collector
(3) Emitter
0.9
1.0
(1) Emitter
(2) Collector
(3) Base
1.5
6.5
5.1
C0.5
0.5
2.3
2.5
4.4
14.5
0.451.05
Taping specifications
Rev.A 1/2
Page 2
Transistors
zElectrical characteristics curves
1.0
Ta=25
°C
(A)
C
0.8
0.6
0.4
0.2
COLLECTOR CURRENT : I
0
COLLECTOR TO EMITTER VOLTAGE : V
Fig.1 Ground emitter output characteristics
(V)
CE(sat)
5.0
2.0
1.0
0.5
0.2
1 2 5 10 20 50 100 200 500 1000 2000
COLLECTOR SATURATION VOLTAGE : V
COLLECTOR CURRENT : I
Fig.4 Collector-emitter saturation voltage
vs. collector current
100µA
B
I
µA
90
A
µ
0
=
80
70
60
50
µ
40
µ
30
µ
20
µ
10
Ta=25°C
IC/IB=1000
C
(mA)
A
µ
µ
A
µ
A
µ
A
A
A
A
CE
2000
A
(V)
1000
500
(mA)
C
200
100
50
20
10
5
COLLECTOR CURRENT : I
2
543210
1
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.00
BASE TO EMITTER VOLTAGE : V
Fig.2
Ground emitter propagation characteristics
50
(pF)
20
10
5
2
1
COLLECTOR OUTPUT CAPACITANCE :Cob
COLLECTOR TO BASE VOLTAGE : V
Fig.5 Colletor output capacitance
vs. collector-base voltage
2SD1759 / 2SD1861
Ta=25
°C
V
CE
=
3V
BE
(V)
50000
FE
20000
10000
5000
DC CURRENT GAIN : h
2000
1 2 5 10 20 50 100 200 500 1000 50002000
COLLECTOR CURRENT : I
Fig.3 DC current gain vs. collector current
f=1MHz
I
C
=0A
Ta=25
°C
1 2 5 10 20 50 1000.1 0.2 0.5
CB
(V)
50
(pF)
20
10
5
2
EMITTER INPUT CAPACITANCE :Cib
1
EMITTER TO BASE VOLTAGE : V
1 2 5 10 20 50 1000.1 0.2 0.5
Fig.6 Emitter input capacitance
vs. emitter-base voltage
Ta=25°C
VCE=3V
1
C
(mA)
f=1MHz
I
C
Ta=25
V
=0A
EB
°C
(V)
Rev.A 2/2
Page 3
Appendix
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
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
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
Notes
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1
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