DTB114EKT146

The DTB114EKT146 is a PNP pre-biased transistor manufactured by ROHM Semiconductor. This surface-mount device integrates a bias resistor (R1 = 10 kΩ) directly into the transistor, simplifying circuit design by reducing external component count.

Key electrical specifications include a collector-emitter breakdown voltage (Vce) of 50 V, a continuous collector current (Ic) of 500 mA, and a maximum power dissipation of 200 mW. The DC current gain (hFE) is typically 56 or greater at Ic=50 mA and Vce=5 V, while the saturation voltage (Vce(sat)) is only 300 mV at Ib=2.5 mA and Ic=50 mA. The transition frequency (ft) is 200 MHz, making it suitable for switching and amplification applications.

The device is housed in a compact SOT-23-3 (TO-236-3, SC-59) package with a surface-mount SMT3 supplier package. It is designed for automated assembly and is available in tape and reel packaging. The transistor is compliant with RoHS3 and REACH standards, and has an MSL rating of 1 (unlimited).

Typical applications include general-purpose switching, signal amplification, and interface circuits where a stable pre-biased configuration is required. The integrated bias resistor reduces board space and component count, making it ideal for high-density designs.