Infineon BB804SF1E6327 Dual Common Cathode Varactor Diode, 42pF min, 1.65:1 Tuning Ratio, 18V, 3-Pin SOT-23

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, Infineon