50-V , R1 = 4.7-kΩ , R2 = 47-kΩ , SOT363 NPN / NPN Digital Transistors-UMH13NTH
The UMH13NTH of digital transistors is designed to replace a single
device and its external resistor bias network. The bias resistor
transistor contains a single transistor with a monolithic bias network
consisting of two resistors; a series base resistor and a base− emitter
resistor. The UMH eliminates these individual components by
integrating them into a single device. The use of a UMH can reduce
both system cost and board space.