Pre-Biased Bipolar Transistor

Description: A pre-biased bipolar transistor integrates a BJT with built-in biasing resistors (typically base-emitter resistor network), simplifying circuit design by reducing external components.

• Structure: BJT (NPN/PNP) + Base resistor (R1) + Base-Emitter resistor (R2)
• Function: Acts as a switch or amplifier with factory-set bias, improving consistency and reducing design complexity.
• Advantages:
  • Reduces component count
  • Improves reliability
  • Simplifies PCB layout
  • Enhances thermal stability
• Typical Use: Logic-level switching, LED drivers, small-signal amplification.
• Marking Example: FMMT493TA (NPN pre-biased)

Note: Check datasheet for internal resistor values and power ratings.