Varactor Diodes

Varactor Diode are a semiconductor diode that is is utilised in RF tuning to circuits voltage-controlled variable capacitance. This type of diode can be used in a multitude of areas where a capacitance level needs to be controlled by a voltage.

How does a varactor diode work?

In order to achieve a specific variance in capacitance, this type of diode works with the different region types of a capacitor known as P-type and N-type. These types can be manipulated to give out higher depletion sizes or narrowed and decreased in size, this will give you the variable capacitance you wish out of the device.

Varactor diodes can also provide analogue control of voltage and can also alongside digitally generated voltage in microprocessors. an ADC can then be utilised to convert from analogue voltage to control the diode.

Where are varactor diodes used?

Varactor diodes have a range of application use such as;

  • Satellites
  • TV tuning
  • DVD devices
  • RF Tuning
  • Frequency synthesizers

...
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Omschrijving Prijs Diode Configuration Application Number of Elements per Chip Minimum Diode Capacitance Maximum Reverse Voltage Minimum Quality Factor Minimum Tuning Ratio Package Type Pin Count Tuning Ratio Test Condition Dimensions Height Length Maximum Operating Temperature
RS-stocknr. 124-5433
FabrikantnummerSVC704-TL-E
FabrikantON Semiconductor
€ 0,106
Each (On a Reel of 3000)
Aantal stuks
Single VCO 1 3.4pF 16V - 6 MCPH 3 1 → 7V 2 x 1.6 x 0.85mm 0.85mm 2mm +150 °C
RS-stocknr. 791-9576
FabrikantnummerSVC236-TB-E
FabrikantON Semiconductor
€ 0,405
Each (In a Pack of 15)
Aantal stuks
Common Cathode Tuner 2 14.44pF 16V 70 5 SOT-23 3 1 to 6.5V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm +125 °C
RS-stocknr. 791-9572
FabrikantnummerSVC230-TB-E
FabrikantON Semiconductor
€ 0,099
Each (In a Pack of 20)
Aantal stuks
Common Cathode Tuner 2 25.1pF 16V 100 1.65 SOT-23 3 2 to 8V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm +125 °C
RS-stocknr. 162-9647
FabrikantnummerSVC236-TB-E
FabrikantON Semiconductor
€ 0,182
Each (On a Reel of 3000)
Aantal stuks
Common Cathode Tuner 2 14.44pF 16V 70 5 SOT-23 3 1 → 6.5V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm +125 °C
RS-stocknr. 791-9591
FabrikantnummerSVC704-TL-E
FabrikantON Semiconductor
€ 0,11
Each (On a Tape of 20)
Aantal stuks
Single VCO 1 3.4pF 16V - 6 MCPH 3 1 → 7V 2 x 1.6 x 0.85mm 0.85mm 2mm +150 °C
RS-stocknr. 162-9645
FabrikantnummerSVC230-TB-E
FabrikantON Semiconductor
€ 0,099
Each (On a Reel of 3000)
Aantal stuks
Common Cathode Tuner 2 25.1pF 16V 100 1.65 SOT-23 3 2 → 8V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm +125 °C