Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers.
Diodes and Rectifiers, NXP Semiconductors
NXP offers an extensive range of switching diodes, in different packages and configurations.