2SD1781K
Datasheet
Medium Power Transistor (32V, 800mA)
l Outline
Parameter
Value
VCEO
32V
IC
800mA
SMT3
SOT-346
SC-59
l Features
1)Very low V CE(sat).
VCE(sat)=0.1V(Typ.)
(IC/IB=500mA/50mA)
2)Higt current capacity in compact package.
3)Complements the 2SB1197K.
l Inner circuit
l Application
POWER AMPLIFIER
l Packaging specifications
Part No.
Package
Package
size
Taping
code
2SD1781K
SMT3
2928
T146
Reel size Tape width
(mm)
(mm)
180
8
Basic
ordering
unit.(pcs)
Marking
3000
AF
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© 2015 ROHM Co., Ltd. All rights reserved.
1/6
20150730 - Rev.001
2SD1781K
Datasheet
l Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Values
Unit
Collector-base voltage
VCBO
40
V
Collector-emitter voltage
VCEO
32
V
Emitter-base voltage
VEBO
5
V
IC
800
mA
ICP*1
1.5
A
PD*2
200
mW
Tj
150
℃
Tstg
-55 to +150
℃
Collector current
Power dissipation
Junction temperature
Range of storage temperature
l Electrical characteristics (Ta = 25°C)
Parameter
Symbol
Conditions
Values
Min.
Typ.
Max.
Unit
Collector-base breakdown
voltage
BVCBO
IC = 50μA
40
-
-
V
Collector-emitter breakdown
voltage
BVCEO
IC = 1mA
32
-
-
V
Emitter-base breakdown voltage
BVEBO
IE = 50μA
5
-
-
V
Collector cut-off current
ICBO
VCB = 20V
-
-
500
nA
Emitter cut-off current
IEBO
VEB = 4V
-
-
500
nA
-
100
400
mV
Collector-emitter saturation voltage
VCE(sat) IC = 500mA, IB = 50mA
hFE
VCE = 3V, IC = 100mA
120
-
390
-
Transition frequency
fT
VCE = 5V, IE = -50mA,
f = 100MHz
-
150
-
MHz
Output capacitance
Cob
VCB = 10V, IE = 0A,
f = 1MHz
-
15
-
pF
DC current gain
hFE values are calssified as follows :
rank
hFE
Q
R
-
-
-
120-270
180-390
-
-
-
*1 Pw=100ms Single pulse
*2 Each terminal mounted on a reference land.
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© 2015 ROHM Co., Ltd. All rights reserved.
2/6
20150730 - Rev.001
2SD1781K
Datasheet
l Electrical characteristic curves(Ta = 25°C)
Fig.1 Ground Emitter Propagation
Characteristics
Fig.2 Typical Output Characteristics
Fig.3 DC Current Gain vs. Collector
Current (I)
Fig.4 DC Current Gain vs. Collector
Current (II)
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© 2015 ROHM Co., Ltd. All rights reserved.
3/6
20150730 - Rev.001
2SD1781K
Datasheet
l Electrical characteristic curves(Ta = 25°C)
Fig.5 Collector-Emitter Saturation
Voltage vs. Collector Current (I)
Fig.6 Collector-Emitter Saturation
Voltage vs. Collector Current (II)
Fig.7 Base-Emitter Saturation Voltage
vs. Collector Current
Fig.8 Gain Bandwidth Product vs.
Emitter Current
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© 2015 ROHM Co., Ltd. All rights reserved.
4/6
20150730 - Rev.001
2SD1781K
Datasheet
l Electrical characteristic curves(Ta = 25°C)
Fig.9 Emitter Input Capacitance vs.
Emitter-Base Voltage
Collector Output Capacitance vs.
Collector-Base Voltage
Fig.10 Safe Operating Area
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© 2015 ROHM Co., Ltd. All rights reserved.
5/6
20150730 - Rev.001
2SD1781K
Datasheet
l Dimensions
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© 2015 ROHM Co., Ltd. All rights reserved.
6/6
20150730 - Rev.001
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