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 Package Type Pin Count Tuning Ratio Test Condition Dimensions Height Length Maximum Operating Temperature
RS Stock No. 626-2046
Mfr. Part No.BB207
BrandNXP
£0.27
Each (In a Pack of 10)
Units
Common Cathode Tuner 2 76pF 15V - 2.6 SOT-23 (TO-236AB) 3 1 → 7.5V 3 x 1.4 x 1mm 1mm 3mm +125 °C
RS Stock No. 653-1415
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
£0.189
Each (In a Pack of 10)
Units
Single Tuner 1 36pF 30V - 13.5 SOD-323 2 1 → 28V 1.7 x 1.25 x 1.05mm 1.05mm 1.7mm +150 °C
RS Stock No. 170-2060
Mfr. Part No.BB207
BrandNXP
£0.338
Each (On a Reel of 3000)
Units
Common Cathode Tuner 2 76pF 15V - 2.6 SOT-23 (TO-236AB) 3 1 → 7.5V 3 x 1.4 x 1mm 1mm 3mm +125 °C
RS Stock No. 165-7472
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
£0.035
Each (On a Reel of 3000)
Units
Single Tuner 1 36pF 30V - 13.5 SOD-323 2 1 → 28V 1.7 x 1.25 x 1.05mm 1.05mm 1.7mm +150 °C
RS Stock No. 162-9647
Mfr. Part No.SVC236-TB-E
£0.164
Each (On a Reel of 3000)
Units
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 Stock No. 505-8521
Mfr. Part No.BB640E6327HTSA1
BrandInfineon
£0.239
Each (In a Pack of 20)
Units
Single Tuner 1 62pF 30V - 19.5 SOD-323 2 1 → 28V 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm +150 °C
RS Stock No. 791-9576
Mfr. Part No.SVC236-TB-E
£0.373
Each (In a Pack of 15)
Units
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 Stock No. 166-1176
Mfr. Part No.BB640E6327HTSA1
BrandInfineon
£0.069
Each (On a Reel of 3000)
Units
Single Tuner 1 62pF 30V - 19.5 SOD-323 2 1 → 28V 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm +150 °C
RS Stock No. 890-2579
Mfr. Part No.1SV229(TPH3,F)
BrandToshiba
£0.186
Each (In a Pack of 25)
Units
Single - 1 - - - - SOD-323 2 - 1.7 x 1.25 x 0.9mm 0.9mm 1.7mm +125 °C
RS Stock No. 124-5433
Mfr. Part No.SVC704-TL-E
£0.096
Each (On a Reel of 3000)
Units
Single VCO 1 3.4pF 16V - 6 MCPH 3 1 → 7V 2 x 1.6 x 0.85mm 0.85mm 2mm +150 °C
RS Stock No. 791-9591
Mfr. Part No.SVC704-TL-E
£0.099
Each (On a Tape of 20)
Units
Single VCO 1 3.4pF 16V - 6 MCPH 3 1 → 7V 2 x 1.6 x 0.85mm 0.85mm 2mm +150 °C
RS Stock No. 179-1058
Mfr. Part No.BB202,115
BrandNXP
£0.191
Each (On a Reel of 3000)
Units
Single Tuner, VCO 1 28.2pF 6V - 2.5 SOD-523 2 0.2 → 2.3V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm +85 °C
RS Stock No. 166-0399
Mfr. Part No.BB145B,115
BrandNXP
£0.125
Each (On a Reel of 3000)
Units
Single VCO 1 6.4pF 6V - 2 SOD-523 2 1 → 4V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm +150 °C
RS Stock No. 626-2074
Mfr. Part No.BB202,115
BrandNXP
£0.437
Each (In a Pack of 10)
Units
Single Tuner, VCO 1 28.2pF 6V - 2.5 SOD-523 2 0.2 to 2.3V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm +85 °C
RS Stock No. 626-1914
Mfr. Part No.BB145B,115
BrandNXP
£0.10
Each (In a Pack of 20)
Units
Single VCO 1 6.4pF 6V - 2 SOD-523 2 1 to 4V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm +150 °C
RS Stock No. 626-1879
Mfr. Part No.BB131,115
BrandNXP
£0.222
Each (In a Pack of 25)
Units
Single Tuner, VCO 1 8pF 30V - 12 SOD-323 2 0.5 to 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm +125 °C
RS Stock No. 626-1891
Mfr. Part No.BB135,115
BrandNXP
£0.201
Each (In a Pack of 25)
Units
Single Tuner, VCO 1 17.5pF 30V - 8.9 SOD-323 2 0.5 to 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm +125 °C
RS Stock No. 626-2080
Mfr. Part No.BB208-03,115
BrandNXP
£0.347
Each (In a Pack of 10)
Units
Single TCXO, Tune, VCXO 1 19.9pF 10V - 3.7 SOD-323 2 1 to 7.5V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm +125 °C
RS Stock No. 166-0382
Mfr. Part No.BB131,115
BrandNXP
£0.071
Each (On a Reel of 3000)
Units
Single Tuner, VCO 1 8pF 30V - 12 SOD-323 2 0.5 → 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm +125 °C
RS Stock No. 791-9572
Mfr. Part No.SVC230-TB-E
£0.092
Each (In a Pack of 20)
Units
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
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