ROHM DTD123YK Data Sheet - Manual
Summary
Ideal for interface, driver, and inverter applications, this digital transistor features integrated built-in bias resistors (R1/R2). This unique design significantly simplifies circuit implementation by eliminating the need for external input components and minimizing parasitic effects. The comprehensive manual provides engineers with detailed specifications, including absolute maximum ratings, electrical performance curves, packaging details, and operating parameters necessary for reliable system design in demanding digital switching environments.
Page 1 Text Content
Digital transistors (built-in resistors) DTD123YK Applications Dimensions (Unit : mm) Inverter, Interface, Driver
DTD123YK
Features 0.4 0.8
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 negative biasing of the input. They also (2) (1) 3) have the advantage of almost completely eliminating 0.95 0.95
parasitic effects. (1) GND
ROHM : SMT3 (2) IN
4) Only the on / off conditions need to be set for operation,
EIAJ : SC-59 (3) OUT
making the device design easy. Each lead has same dimensions
Abbriviated symbol : F62
Structure Inner circuit NPN epitaxial planar silicon transistor (Resistor built-in type)
R1 OUT
Package specifications
Package SMT3
IN OUT
Packaging type Taping
Code T146
Part No. Basic ordering unit (pieces) 1.
DTD123YK
0. 3M in
Absolute maximum ratings (Ta=25°C)
Limits
Parameter Symbol Unit
DTD123YK
Supply voltage VCC
Input voltage VIN −5 to +12
Output current IC m A
Power dissipation PD m W
Junction temperature Tj
Storage temperature Tstg −55 to +150
1/2 www.rohm.com 2009.05 - Rev.C
○c 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM DTD123YK Data Sheet - Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 156.96 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
What critical safety precautions must I implement when using this product?
Users must incorporate safety measures like derating, redundancy, fire control, and fail-safe designs to guard against physical injury or damage from failure.
Is this device suitable for use in life-critical machinery?
No. The product is not designed for high-reliability systems where malfunction could pose a direct threat to human life (e.g., medical or aerospace equipment).
How do the built-in transistors simplify my overall circuit design?
The bias resistors allow configuration of an inverter circuit without connecting separate external input resistors, simplifying development.
What are the absolute maximum limits for voltage and temperature?
The Supply Voltage (VCC) limit is 50 V, and the component's Junction Temperature (Tj) must not exceed 150°C.