ROHM DTD123EK datasheet manual
Summary
The DTD123EK is a specialized NPN epitaxial planar silicon transistor designed for efficiently configuring inverter and driver circuits. Its key feature is the built-in bias resistors which simplify design by eliminating the need for external input components, while also minimizing parasitic effects. This manual provides comprehensive technical data, including detailed absolute maximum ratings, electrical characteristics, and application curve analysis necessary for engineers designing advanced interface and switching applications.
Page 1 Text Content
500m A / 50V Digital transistors (with built-in resistors) DTD123EK Applications Dimensions (Unit : mm) Inverter, Interface, Driver
DTD123EK
Features
1) Built-in bias resistors enable the configuration of an inverter 0.4 0.8
circuit without connecting external input resistors (see
equivalent circuit). 2) The bias resistors consist of thin-film resistors with complete isolation to allow negative biasing of the input. They also have
the advantage of almost completely eliminating parasitic (2) (1) effects. 0.95 0.95
3) Only the on / off conditions need to be set for operation,
1.9 (1) GND
making the device design easy. (2) IN
(3) OUTROHM : SMT3
EIAJ : SC-59 Each lead has same dimension
Structure Abbreviated symbol: F22 NPN epitaxial planar silicon transistor (Resistor built-in type)
Packaging specifications Inner circuit 1.
Package SMT3
Packaging type Taping OUT
Code T146
0. 3M in
Part No. Basic ordering unit (pieces)
DTD123EK
IN OUT
Absolute maximum ratings (Ta=25C)
Limits
Parameter Symbol Unit
DTD123EK R1=R2=2.2kΩ
Supply voltage VCC
Input voltage VIN −10 to +12
Output current IC m A
Power dissipation Pd m W
Junction temperature Tj
Storage temperature Tstg −55 to +150
www.rohm.com
1/2 2009.06 - Rev.C
○c 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM DTD123EK datasheet manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 136.68 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
How does the built-in resistor feature simplify circuit design?
The built-in bias resistors allow configurations like an inverter circuit without requiring external input resistors.
What are the absolute maximum ratings for this device?
The supply voltage (VCC) can be up to 50 V, and the output current (IC) is rated at 500 mA.
Can I use this component in safety-critical systems, like medical instruments?
No, it is not designed for equipment requiring an extremely high level of reliability or where failure could pose a direct threat to life.