Varicap diodes (or varactor or tuning diodes) are principally used as voltage variable capacitors with their diode function a secondary option. These small devices play an important role in a host of RF applications from tuning frequency multiplier and modulation to couple elements in filters with controlled bandwidth, parametric amplification and switching in the VHF and microwave regions.

Features

  • Excellent matching
  • Excellent linearity and matching
  • Very small and leadless SMD packages
  • Very low series resistance
  • Complete portfolio covering a wide range of applications
  • Tight capacitance specifications
  • High capacitance ratio

Target Applications

  • Electronic tuning including satellite and terrestrial TV tuners
  • DVD recorders
  • FM radio tuning from car radios to mobile phones
  • Voltage controlled oscillator (VCO)
  • Voltage controlled crystal oscillator / temperature controlled crystal oscillator (VCXO/TCXO)

 
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