ROHM DTC125TUA User Guide
Summary
This NPN epitaxial planar silicon transistor is designed specifically for high-density inverter circuits. Featuring built-in bias resistors and advanced thin-film construction, it enables reliable switching performance without external resistor connections, simplifying design. The included manual provides comprehensive details on electrical characteristics, absolute maximum ratings, packaging standards, and deep application insights. It is essential reading for professional engineers and product designers developing power drivers and interface circuits requiring stable, integrated switching components.
Page 1 Text Content
100m A / 50V Digital transistor (with built-in resistor) DTC125TUA / DTC125TKA Applications Dimensions (Unit : mm) Inverter, Interface, Driver
DTC125TUA
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 negative biasing of the input, and parasitic
effects are almost completely eliminated.
(1) Emitter
ROHM : UMT3 0.15
3) Only the on / off conditions need to be set for operation, (2) Base
EIAJ : SC-70
(3) Collector
making the device design easy.
Each lead has same dimensions Abbreviated symbol : 0A
4) Higher mounting densities can be achieved.
DTC125TKA
Structure 0.4 0.8 NPN epitaxial planar silicon transistor
(Resistor built-in type)
Packaging specifications (2) (1) 1.
Package UMT3 SMT3 2.
(1) Emitter
Packaging type Taping Taping 1.9 (2) Base
ROHM : SMT3
(3) Collector
Code T106 T146 EIAJ : SC-59
Abbreviated symbol : 0A Each lead has same dimensions
Part No. Basic ordering unit (pieces)
0. 1M in
DTC125TUA 0. 3M in
DTC125TKA Inner circuit
E : Emitter C : Collector B : Base
www.rohm.com
1/2 2009.06 - Rev.C
○c 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM DTC125TUA User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 135.31 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
How do the built-in bias resistors assist circuit design?
They enable the configuration of an inverter circuit without requiring the connection of external input resistors.
What is the maximum allowable collector power dissipation (Pc)?
The Collector power dissipation limit (Pc) is 200 mW at Ta=25°C.
Can this transistor be used in life-critical applications?
No, it should not be used for equipment requiring extremely high reliability, such as medical instruments or transportation equipment.
What is the typical Collector-emitter saturation voltage (VCE(sat))?
The typical value for the Collector-emitter saturation voltage is 0.3 V.