The DTA043T series is a PNP digital transistor with built-in bias resistors. It features built-in bias resistors that allow the configuration of an inverter circuit without connecting external input resistors. The bias resistors consist of thin-film resistors with complete isolation to enable negative biasing. They also eliminate parasitic effects completely. Only the on/off conditions need to be set for operation, making circuit design easy.
The DTA043T series from ROHM includes digital transistors with built‑in bias resistors, allowing inverter or driver circuits without external resistors. Variants such as DTA043TM, DTA043TEB, and DTA043TUB (UMT3F package) offer the same core functionality with different package sizes.
The datasheet lists absolute maximum ratings, electrical characteristics, and mechanical dimensions for each package. It also outlines typical applications (switching, inverter, interface, driver circuits) and provides packaging specifications, including tape and reel details.
| Collector‑base voltage (Vebo) | -50 V |
|---|---|
| Collector‑emitter voltage (Veco) | -50 V |
| Emitter‑base voltage (Vebo) | 5 V |
| Collector current (Ic) | -100 mA |
| Power dissipation (DTA043TUB) | 200 mW |
| Junction temperature (Tj) | 150 °C |
| Storage temperature range | -55 to +150 °C |
| Input resistance (Ry) | 3.29 kΩ |
| Package (DTA043TUB) | UMT3F (SC‑85) |
The collector‑emitter voltage rating is –50 V.
The DTA043TUB can dissipate up to 200 mW.
The DTA043TUB is supplied in the UMT3F (SC‑85) package.
Typical applications include switching circuits, inverter circuits, interface circuits, and driver circuits.