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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Description Price Diode Configuration Application Number of Elements per Chip Minimum Diode Capacitance Maximum Reverse Voltage Minimum Quality Factor Minimum Tuning Ratio Mounting Type Package Type Pin Count Tuning Ratio Test Condition Dimensions Height Length
RS Stock No. 626-2074
Mfr. Part No.BB202,115
BrandNXP
€0.485
Each (In a Pack of 10)
units
Single Tuner, VCO 1 28.2pF 6V - 2.5 Surface Mount SOD-523 2 0.2 to 2.3V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 166-0534
Mfr. Part No.BB208-03,115
BrandNXP
€0.154
Each (On a Reel of 3000)
units
Single TCXO, Tune, VCXO 1 19.9pF 10V - 3.7 Surface Mount SOD-323 2 1 → 7.5V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm
RS Stock No. 165-7472
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
€0.039
Each (On a Reel of 3000)
units
Single Tuner 1 36pF 30V - 13.5 Surface Mount SOD-323 2 1 → 28V 1.7 x 1.25 x 1.05mm 1.05mm 1.7mm
RS Stock No. 791-9591
Mfr. Part No.SVC704-TL-E
€0.11
Each (On a Tape of 20)
units
Single VCO 1 3.4pF 16V - 6 Surface Mount MCPH 3 1 → 7V 2 x 1.6 x 0.85mm 0.85mm 2mm
RS Stock No. 166-1176
Mfr. Part No.BB640E6327HTSA1
BrandInfineon
€0.079
Each (On a Reel of 3000)
units
Single Tuner 1 62pF 30V - 19.5 Surface Mount SOD-323 2 1 → 28V 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm
RS Stock No. 890-2579
Mfr. Part No.1SV229(TPH3,F)
BrandToshiba
€0.206
Each (In a Pack of 25)
units
Single - 1 - - - - Surface Mount SOD-323 2 - 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm
RS Stock No. 857-8116
Mfr. Part No.BBY5503WE6327HTSA1
BrandInfineon
€0.105
Each (On a Reel of 3000)
units
Single VCO in Mobile Communication 1 5.5pF 16V - 2 Surface Mount SOD-323 2 2 V, 10 V 1.7 x 1.25 x 0.85mm 0.85mm 1.7mm
RS Stock No. 166-1005
Mfr. Part No.BB639CE7904HTSA1
BrandInfineon
€0.088
Each (On a Reel of 3000)
units
Single Tuner 1 2.4pF 30V - 9.5 Surface Mount SOD-323 2 - 1.7 x 1.25 x 0.85mm 0.85mm 1.7mm
RS Stock No. 791-9572
Mfr. Part No.SVC230-TB-E
€0.099
Each (In a Pack of 20)
units
Common Cathode Tuner 2 25.1pF 16V 100 1.65 Surface Mount SOT-23 3 2 to 8V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm
RS Stock No. 178-7399
Mfr. Part No.BB837E6327HTSA1
BrandInfineon
€0.108
Each (On a Reel of 3000)
units
Single Tuner 1 6pF 30V - 10.2 Surface Mount SOD-323 2 1 → 28V 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm
RS Stock No. 826-9314
Mfr. Part No.BB814E6327GR1HTSA1
BrandInfineon
€0.155
Each (In a Pack of 100)
units
Common Cathode Tuner 2 43pF 18V 200 2.05 Surface Mount SOT-23 3 2 → 8V 2.9 x 1.3 x 0.9mm 0.9mm 2.9mm
New
RS Stock No. 218-6281
Mfr. Part No.BBY5502VH6327XTSA1
BrandInfineon
€0.089
Each (On a Reel of 3000)
units
Single - 1 6pF 16V - - - SC79 2 - - - -
RS Stock No. 826-9399
Mfr. Part No.BBY6602VH6327XTSA1
BrandInfineon
€0.182
Each (In a Pack of 100)
units
Single Tuner, VCO 1 66pF 12V - 5 Surface Mount SC-79 2 1 → 4.5V 1.2 x 0.8 x 0.55mm 0.55mm 1.2mm
RS Stock No. 823-5655
Mfr. Part No.BB857H7902XTSA1
BrandInfineon
€0.118
Each (In a Pack of 25)
units
Single SAT Tuners - - 30V - - Surface Mount SCD-80 2 - 1.3 x 0.8 x 0.7 (With Pin)mm 0.7mm 1.3mm
RS Stock No. 436-7874
Mfr. Part No.BBY40,215
BrandNXP
€0.32
Each (In a Pack of 10)
units
Single Tuner 1 26pF 30V - 5 Surface Mount SOT-23 (TO-236AB) 3 3 → 25V 3 x 1.4 x 1mm 1mm 3mm
RS Stock No. 145-8825
Mfr. Part No.BB914E6327HTSA1
BrandInfineon
€0.065
Each (On a Reel of 3000)
units
Common Cathode FM Radio Tuner 2 17.6pF 18V - 2.28 Surface Mount SOT-23 3 8V 2.9 x 1.3 x 0.9mm 0.9mm 2.9mm