This document describes the features and characteristics of the ROHM DTC144G series digital transistors, including the internal circuit and built-in bias resistors. These transistors are suitable for switching circuits, inverter circuits, interface circuits, and driver circuits.
The DTC144GUA is a NPN digital transistor with built‑in bias resistors, designed for switching, inverter, interface, and driver circuits. The device features a 100 mA collector current, 50 V collector‑base and collector‑emitter ratings, and is RoHS compliant.
Key specifications include a maximum collector power dissipation of 200 mW, a junction temperature rating of 150 °C, and a transition frequency of 250 MHz. The part is offered in a SOT‑323 (SC‑70) package (DTC144GUA) and a SOT‑346 (SC‑59) package (DTC144GKA) with detailed mechanical dimensions provided in the sheet.
| Collector‑base voltage (Vcbo) | 50 V |
|---|---|
| Collector‑emitter voltage (Vceo) | 50 V |
| Emitter‑base voltage (Vebo) | 5 V |
| Collector current (Ic) | 100 mA |
| Collector power dissipation (Pmax) | 200 mW |
| Junction temperature (Tj) | 150 °C |
| Storage temperature range | -55 °C to +150 °C |
| Emitter‑base resistance (R) | 47 kΩ (typ) |
| Transition frequency (fT) | 250 MHz |
| Package (DTC144GUA) | SOT‑323 (SC‑70) |
The device can handle up to 100 mA of collector current.
Both the collector‑base and collector‑emitter voltages are rated at 50 V, and the emitter‑base voltage is rated at 5 V.
DTC144GUA is supplied in a SOT‑323 (SC‑70) package, while DTC144GKA is supplied in a SOT‑346 (SC‑59) package.
Yes, the device is lead‑free and RoHS compliant.