Page 1
Transistors
-500mA / -40V Digital transistors (with built-in resistor)
DTB143TK
zApplic ations
Inverter, Interface, Driver
zFeatures
1) Built-in bias resistors enable the configuration of an
inverter circuit without connecting external input
resistors (see equivalent circuit).
2) The bias resistors consist of thin-film resistors with
complete isolation to allow positive bia sing o f the inpu t.
They also have the advantage of almost completely
eliminating parasitic effects.
3) Only the on / off conditions need to be set for
operation, making the device design easy .
zStructure
PNP epitaxial planar silicon transistor
(Resistor built-in type)
zPackaging specifications
Part No.
DTB143TK
Package
Packaging type
Code
Basic ordering
unit (pieces)
SMT3
Taping
T146
3000
zExternal dimensions (Unit : mm)
2.9
0.4
(3)
1.6
ROHM : SMT3
EIAJ : SC-59
(2)
0.95 0.95
(1)
1.9
Each lead has same dimension
Abbreviated symbol : F93
zEquivalent circ uit
B
B : Base
C : Collector
E : Emitter
R1=4.7kΩ
R
1
DTB143TK
1.1
0.8
2.8
0.15
0.3Min.
(1) Emitter
(2) Base
(3) Collector
C
E
zAbsolute maximum ratings (Ta=25°C)
Unit
V
V
V
mA
mW
C
C
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power dissipation
Junction temperature
Storage temperature
V
CBO
CEO
V
V
EBO
I
P
Tj
Tstg
LimitsParameter Symbol
−50
−40
−5
C
C
−500
200
150
−55 to +150
Rev.B 1/2
Page 2
Transistors
m
F
nt
)
m
t
zElectrical characteristics (Ta=25°C)
DTB143TK
Parameter Symbol
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
Characteristics of built-in transistor
∗
zElectrical characteristic curves
1k
500
FE
200
100
50
20
10
5
DC CURRENT GAIN : h
2
1
Ta=100 C
25 C
−40 C
-1m-0.5m -2m -5m -10m -20m -50m -100m -200m -500
COLLECTOR CURRENT : I
ig.1 DC current gain vs. collectorcurre
V
CE
= −
5V
A)
C
(
Typ. Max. Unit Conditions
Min.
CBO
BV
BV
CEO
BV
EBO
I
CBO
I
EBO
V
CE(sat)
h
FE
R
1
f
T
∗
(V
CE (sat)
COLLECTOR SATURATION VOLTAGE : V
−
−50
−
−40
−
−5
−
−
−
−
−
−
100
250
3.29
4.7
−
200
-1
-500m
-200m
-100m
-50m
-20m
-10m
-5m
-2m
-1m
Ta=100 C
-1m-0.5m -2m -5m -10m -20m -50m -100m -200m -500
COLLECTOR CURRENT : I
Fig.2Collector-emitter saturation
voltage vs. collector curren
−
VI
C
= −50µA
−
−
−0.5
−0.5
−0.3
600
6.11 −
−
25 C
−40 C
V
V
µA
µA
V
−
kΩ
MHz
C
= −1mA
I
I
E
= −50µA
CB
= −50V
V
EB
= −4V
V
I
C/IB
= −50mA/−2.5mA
V
CE
= −5V, IC= −50mA
V
CE
= −10V, IE=50mA, f=100MHz
lC/lB=20
C
(A)
Rev.B 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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