FinFET

Definition: FinFET (Fin Field-Effect Transistor) is a 3D transistor structure where the channel is a thin, fin-like feature standing vertically from the substrate.

Key Points:

  • Provides better electrostatic control over the channel
  • Reduces short-channel effects
  • Allows for continued scaling beyond planar CMOS limitations
  • Used in advanced process nodes (22nm and below)

Advantages:

  • Lower leakage current
  • Higher drive current
  • Improved sub-threshold slope
  • Better scalability

Challenges:

  • More complex manufacturing process
  • Higher parasitic capacitance
  • Self-heating effects

Applications:

  • High-performance computing
  • Mobile processors
  • Advanced memory technologies

FinFETs are crucial for continuing Moore’s Law in advanced semiconductor processes.