ROHM DTC124GUA Specifications User Guide
Summary
These reliable 100mA/50V digital transistors are designed for critical power switching applications, making them ideal for use in drivers, interfaces, and inverter circuits. Featuring built-in bias resistors and compact SMT packaging, they simplify design by eliminating complex parasitic effects. This manual provides comprehensive technical specifications, including absolute maximum ratings, detailed electrical characteristics, and performance curves necessary for engineers designing reliable digital logic and power management solutions.
Page 1 Text Content
100m A / 50V Digital transistors (with built-in resistors) DTC124GUA / DTC124GKA Applications Dimensions (Unit : mm) Inverter, Interface, Driver
DTC124GUA
Features
1) The built-in bias resistors consist of thin-film resistors with complete (3)
isolation to allow positive biasing of the input, and parasitic effects are almost completely eliminated.
2) Only the on / off conditions need to be set for operation, making the
(1) GND
device design easy. 0.65 0.65
(2) IN
3) Higher mounting densities can be achieved. 0.15
1.3 (3) OUTROHM : UMT3
EIAJ : SC-70
Abbreviated symbol : K25
Structure
DTC124GKA 2.9 1.1
NPN epitaxial planar silicon transistor
(Resistor built-in type)
Packaging specifications
Package UMT3 SMT3 (2) (1)
0.95 0.95 (1) GND
Packaging type Taping Taping
0.15 (2) IN
1.9 (3) OUTROHM : SMT3
Code T106 T146
EIAJ : SC-59
Abbreviated symbol : K25
Part No. Basic ordering unit (pieces)
DTC124GUA
DTC124GKA
Absolute maximum ratings (Ta=25C) Inner circuit 0. 1M in
0. 3M in
Symbol Limits Parameter Unit
Collector-base voltage VCBO
Collector-emitter voltage VCEO
Emitter-base voltage VVEBO
Collector current m AIC
Collector power dissipation PC m W
Junction temperature Tj °C
Storage temperature Tstg −55 to +150 °C
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 DTC124GUA Specifications User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 3 |
| File Size | 136.25 KB |
| Published | June 19, 2026 |
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Frequently Asked Questions
What is the recommended package for high-density mounting?
The units support UMT3 and SMT3 packages, allowing for higher mounting densities.
What are the main electrical limitations of this transistor?
It has absolute maximum ratings like a collector power dissipation (Pc) of 200 mW and a junction temperature (Tj) up to 150 °C.
How is the positive biasing accomplished in the built-in resistors?
The thin-film resistors provide complete 3 isolation, which allows for positive input biasing and eliminates parasitic effects.
What are the critical safety considerations when using this product?
Users must implement safety measures like derating or redundant designs to prevent physical injury or fire in equipment use.