DTB122JK
Transistors
Rev.A
1/2
Digital transistor (built-in resistors)
DTB122JK
Features
1) Built-in bias resistors enable the configuration of an
inverter circuit without connecting external input
resistors.
2) The bias resistors consist of thin-film resistors with
complete isolation to allow positive biasing of the input,
and parasitic effects are almost completely eliminated.
3) Only the on / off conditions need to be set for
operation, making device design easy.
4) Higher mounting densities can be achieved.
Circuit schematic
OUT
GND (+)
IN
R
1
R
2
OUT
IN
GND (+)
Absolute maximum ratings (Ta=25
C)
Parameter
Symbol
V
CC
V
I
I
O
Pd
Tj
Tstg
Limits
-50
-500
-5 to +5
200
150
-55 to +150
Unit
V
V
mA
mW
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
C
C
Package, marking, and packaging specifications
Part No.
Package
Marking
Packaging code
Basic ordering unit (pieces)
DTB122JK
SMT3
G3C
T146
3000
External characteristics (Ta=25
C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
V
I(off)
V
O(on)
I
I
I
O(off)
G
I
f
T
R
1
-
-
-
-
47
-
154
-
-0.1
-
-
-
200
220
-0.3
-0.3
-45
-10
-
-
286
V
V
mA
A
-
MHz
V
CC
= -5V , I
O
= -100A
V
I(on)
-2
-
-
V
O
= -0.3V , I
O
= -30mA
I
O
/I
I
= -50mA/-2.5mA
V
I
= -5V
V
CC
= -30V , V
I
=0V
I
O
= -50mA , V
O
= -5V
V
CE
= -10V , I
E
=50mA , f=100MHz
-
R
2
/R
1
17.1
21.3
25.6
-
-
Transition frequency of the device.
Input voltage
Output voltage
Input current
Output current
DC current gain
Input resistance
Resistance ratio
Transition frequency
DTB122JK
Transistors
Rev.A
2/2
Electrical characteristics curves
-100
-50
-20
-10
-5
-2
-1
-500m
-200m
-100m
-1m
-500
-2m -5m -10m -20m -50m -100m -200m -500m
V
O
= -0.3V
Fig.1 Input voltage vs. Output current
(ON characteristics)
INPUT VOLTAGE : V
I(on)
(V)
OUTPUT CURRENT : I
O
(A)
Ta
=25 C
0
-
3
-
2.5
-
2
-
1.5
-
1
-
500m
INPUT VOLTAGE : V
I(off)
(V)
-
1
-
10
-
5
-
2
-
100
-
50
-
20
-
1m
-
10m
-
500
-
200
-
5m
-
2m
OUTPUT CURRENT : I
O
(A)
Fig.2 Output current vs. Input voltage
(OFF characteristics)
V
CC
=
-
5V
Ta
=
25 C
1000
500
200
100
50
20
10
5
2
1
-1m
-500
-2m
-5m -10m -20m -50m -100m -200m -500m
Fig.3 DC current gain vs. Output current
DC CURRENT GAIN
: G
I
OUTPUT CURRENT : I
O
(A)
V
O
= -5V
Ta
=25 C
-1
-500m
-200m
-100m
-50m
-20m
-10m
-5m
-2m
-1m
-1m
-500
-2m
-5m -10m -20m -50m -100m -200m -500m
Fig.4 Output voltage vs. Output current
OUTPUT VOLTAGE
:
V
O(on)
(V)
OUTPUT CURRENT : I
O
(A)
I
O
/I
I
=20
Ta
=25 C
Appendix
Appendix1-Rev1.1
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.
Notes
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.
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.
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