DTD114EKT146

The DTD114EKT146 is an NPN pre-biased bipolar junction transistor manufactured by ROHM Semiconductor. Pre-biased transistors integrate bias resistors (R1 = 10 kΩ) to simplify circuit design by reducing external component count. This device is designed for general-purpose switching and amplification in low-power applications. Key electrical specifications include a collector-emitter voltage (Vce) of 50 V, a continuous collector current (Ic) of 500 mA, and a power dissipation of 200 mW. The DC current gain (hFE) is a minimum of 56 at Ic=50mA and Vce=5V, with a maximum Vce saturation of 300mV at Ib=2.5mA and Ic=50mA. The transition frequency (ft) is 200 MHz, making it suitable for moderate-speed switching. The transistor is housed in a surface-mount SMT3 package, which is compatible with TO-236-3, SC-59, and SOT-23-3 footprints. The mounting type is surface mount, and the supplier device package is SMT3. This component is RoHS3 compliant and REACH unaffected, though compliance status is unverified. It is commonly used in load switching, driver circuits, and signal amplification where space and component count are constrained.