Toshiba, RN47A4JE(TE85L,F), Dual NPN + PNP Digital Transistor, 10050 10 (PNP) kΩ, 47 (NPN) kΩ, Ratio Of 0.21,

A range of dual digital transistors from Toshiba. These devices include built-in biasing resistors and can be directly driven from digital sources. The range includes dual NPN, dual PNP, and NPN+PNP configurations.

Digital Transistors, Toshiba

Resistor-equipped bipolar transistors, also known as “Digital Transistors” or “Bias Resistor Transistors”, incorporating one or two integrated resistors. A single series input resistor, or a potential divider of two resistors, allows these devices to be directly driven from digital sources. Both single and dual transistor versions are available.