NSBC124EF3T5G Datasheet - ON Semiconductor

Digital Transistors (BRT) R1 = 22 k, R2 = 22 k
NPN Transistors with Monolithic Bias Resistor Network

This series of digital transistors is designed to replace a single device and its external resistor bias network. The Bias Resistor Transistor (BRT) contains a single transistor with a monolithic bias
network consisting of two resistors; a series base resistor and a base−emitter resistor. The BRT eliminates these individual components by integrating them into a single device. The use of a BRT can reduce both system cost and board space.

FEATUREs
•Simplifies Circuit Design
•Reduces Board Space
•Reduces Component Count
•S and NSV Prefix for Automotive and Other Applications Requiring
  Unique Site and Control Change Requirements; AEC-Q101
  Qualified and PPAP Capable
•These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant