ROHM DTA143TUB User Guide
Summary
The DTA143T series is a line of powerful PNP digital transistors designed for reliable switching, inversion, and interface driving circuits. These advanced components feature built-in biasing resistors, simplifying circuit design by eliminating the need for external input resistors. The manual provides comprehensive documentation covering electrical characteristics, absolute maximum ratings, package specifications (SOT/SMD types), and mechanical dimensions. Ideal for professional engineers working on electronics applications such as audio/visual or office automation equipment who require high performance in a lead-free, RoHS compliant design.
Page 1 Text Content
DTA143T series
Datasheet
PNP -100m A -50V Digital Transistors (Bias Resistor Built-in Transistors)
l Outline Parameter Value VMT3 EMT3F
Collector
Collector
VCEO -50V IC -100m A
Emitter
Emitter
DTA143TM DTA143TEB (SC-105AA) (SC-89)
EMT3 UMT3F
Collector Collector
l Features 1) Built-In Biasing Resistors
2) Built-in bias resistors enable the configuration of Emitter Emitter
an inverter circuit without connecting external
DTA143TE DTA143TUB input resistors (see equivalent circuit). SOT-416 (SC-75A) (SC-85)
UMT3 SMT3
3) The bias resistors consist of thin-film resistors
Collector Collector
with complete isolation to allow negative biasing of the input. They also have the advantage of
Emitter
completely eliminating parasitic effects. Emitter
4) Only the on/off conditions need to be set for
DTA143TUA DTA143TKA operation, making the circuit design easy. SOT-323 (SC-70) SOT-346 (SC-59)
5) Complementary NPN Types :DTC143T series 6) Complex transistors :EMB3 /UMB3N / IMB3A l Inner circuit /EMA3 /UMA3N /FMA3A （PNP type） 7) Lead Free/Ro HS Compliant.
l Application Switching circuit, Inverter circuit, Interface circuit, Driver circuit
l Packaging specifications
Package Basic
Taping Reel size Tape width
Part No. Package size ordering Marking
code (mm) (mm)
(mm) unit (pcs)
DTA143TM VMT3 T2L 8,000 DTA143TEB EMT3F TL 3,000 DTA143TE EMT3 TL 3,000 DTA143TUB UMT3F TL 3,000 DTA143TUA UMT3 T106 3,000 DTA143TKA SMT3 T146 3,000
www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 1/9 2012.04 - Rev.A
Page Summary Contents For ROHM DTA143TUB User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 10 |
| File Size | 681.32 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What is the maximum power dissipation for the DTA143T series?
For the different packages, the ratings vary: DTA143TEB is 150 mW, while DTA143TUB, DTA143TTE, and DTA143TUA are rated at 200 mW.
What type of circuits can this transistor be used in?
Applications include switching circuit, Inverter circuit, Interface circuit, and Driver circuit.
How do the built-in bias resistors benefit circuit design?
They enable the configuration of an inverter circuit without needing external input resistors (see equivalent circuit), simplifying the design process.