DDTA144TCA-7-F

The DDTA144TCA-7-F is a PNP pre-biased small signal transistor from Diodes Incorporated, designed for low-power switching and interface applications. It features a built-in 47kΩ base resistor (R1) which simplifies circuit design by reducing external component count. The transistor offers a collector-emitter breakdown voltage of 50V and a continuous collector current rating of 100mA, with a maximum power dissipation of 200mW. Electrical characteristics include a minimum DC current gain (hFE) of 100 at 1mA collector current and 5V VCE, and a saturation voltage (VCE(sat)) of 300mV maximum at 250µA base current and 2.5mA collector current. The device achieves a typical transition frequency of 250 MHz, making it suitable for moderate-speed switching. It is housed in the industry-standard SOT-23-3 surface mount package (also referred to as TO-236-3 or SC-59), enabling high-density PCB assembly. The device is rated for operation from -55°C to +150°C (inferred from series datasheet) and is listed as RoHS3 compliant and REACH unaffected. These features make it a versatile choice for general-purpose switching, driver circuits, and logic level translation in consumer and industrial electronics.