DTC143EKA NPN Digital Transistor (Built-in Bias Resistor) SOT-346

FEATURES:

• Built-In Biasing Resistors, R1 = R2 = 4.7kΩ
• Built-in bias resistors enable the configuration of
  an inverter circuit without connecting external
  input resistors (see inner circuit) .
• Only the on/off conditions need to be set
  for operation, making the circuit design easy.