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DTC643TU / DTC643TK
Transistors
Digital transistors (built-in resistor)
DTC643TU / DTC643TK
!!!!Features
In addition to the features of regular digital transistors.
1) Low saturation voltage, typically
V
CE (sat) =40mV at IC / IB=50mA / 2.5mA, makes these
transistors ideal for muting circuits.
2) These transistors can be used at high current levels,
I
C=600mA.
!!!!Structure
NPN digital transistor
(Built-in resistor type)
!!!!Equivalent circuit
B
R=4.7kΩ
B : Base
C : Collector
E : Emitter
R
C
E
!!!!Absolute maximum ratings (Ta=25°C)
Parameter Symbol
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power dissipation
Junction temperature
Storage temperature
V
CBO
V
CEO
V
EBO
I
C
C
Tj 150
Tstg
Limits
20
20
12
600
200P
−55 to +150
!!!!External dimensions (Unit : mm)
2.0±0.2
1.3±0.1
0.65
0.65
(1)
(2)
±0.1
2.1±0.1
(3)
2.9±0.2
1.9±0.2
1.25
+0.1
0.3
−0
Abbreviated symbol : R03
0.950.95
(2)(1)
+0.2
−0.1
2.8±0.2
1.6
(3)
+0.1
0.4
−0.05
Abbreviated symbol : R03
0.2
0.15
Each lead has same dimensions
0.15
Each lead has same dimensions
Unit
V
V
V
mA
mW
°C
°C
UMT3
<SC-70>
(1) Emitter
(2) Base
(3) Collector
SMT3
<SC-59>
(1) Emitter
(2) Base
(3) Collector
0.9±0.1
0.7
±0.05
1.1
0.8±0.1
+0.1
−0.06
±0.1
+0.2
−0.1
0−0.1
0.1Min.
0.3Min.
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DTC643TU / DTC643TK
Transistors
!!!!Electrical characteristics (Ta=25°C)
Parameter Symbol Min. Typ. Max. Unit Conditions
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Emitter cutoff current
Collector-emitter saturation voltage
DC current transfer ratio
Input resistance
Transition frequency
Output "ON" resistance
∗Transition frequency of the device.
!!!!Packaging specifications and hFE
Package
Type
Packaging type
Code
Basic ordering unit (pieces)
DTC643TU
DTC643TK
!!!!Electrical characteristic curves
10000
VCE=5V
FE
1000
DC CURRENT GAIN : h
100
0.1 1 10 100 1000
100°C
25°C
−40°C
COLLECTOR CURRENT : I
C
Fig.1 DC Current Gain vs.
Collector Current
!!!!Ron measurement circuit
RL=1kΩ
R
BV
BV
BV
I
I
V
CE (sat)
R
UMT3
Taping Taping
T106
3000
−
(mA)
v
0
on
= ×R
vi−v
L
0
20 −−VIC=50µA
CBO
20 −−V
CEO
12 −−V
EBO
−−0.5 µA
CBO
−−0.5 µA
EBO
− 40 150 mV
820 − 2700 −
FE
3.29 4.7 6.11 kΩ
1
f
− 150 − MHz
T
− 0.55 − Ω
on
SMT3
T146
3000
−
10000
IC / IB=20 / 1
1000
(mV)
CE (sat)
100
100°C
10
COLLECTOR SATURATION
−40°C
VOLTAGE : V
1
0.1 1 10 100 1000
COLLECTOR CURRENT : I
Fig.2 Collector-Emitter Saturation
Voltage vs. Collector Current
I
=1mA
C
I
=50µA
E
V
=20V
CB
=12V
V
EB
/ IB=50mA / 2.5mA
I
C
=5V, IC=50mAh
V
CE
−R
=10V, IE= −50mA, f=100MHz
V
CE
VI=5V, R
25°C
(mA)
C
=1kΩ, f=1MHz
L
1000
100
(Ω)
on
10
1
ON RESISTANCE : R
0.1
Fig.3
∗
Ta=25°C
f=1kHz
=1kΩ
R
L
hFE=1500 (5V / 50mA)
0.1 1 10 100
INPUT VOLTAGE : V
"ON" resistance vs. Input Voltage
(V)
I
Input
v
i
100mV
(rms)
f=1kHz
Fig.4 Output "ON" resistance (Ron)
measurement circuit
Output
V
v
0
v
I
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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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