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. 626-1891
Mfr. Part No.BB135,115
BrandNXP
TWD12.30
Each (In a Pack of 25)
units
Single Tuner, VCO 1 17.5pF 30V - 8.9 Surface Mount SOD-323 2 0.5 to 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm
RS Stock No. 179-1056
Mfr. Part No.BB135,115
BrandNXP
TWD5.20
Each (On a Reel of 3000)
units
Single Tuner, VCO 1 17.5pF 30V - 8.9 Surface Mount SOD-323 2 0.5 → 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm
RS Stock No. 890-2588
Mfr. Part No.1SV285(TPH3,F)
BrandToshiba
TWD4.70
Each (In a Pack of 25)
units
Single UHF Band Radio 1 1.85pF 10V - - Surface Mount 1-1G1A 2 1 → 4V 1.2 x 0.8 x 0.6mm 0.6mm 1.2mm
RS Stock No. 626-1879
Mfr. Part No.BB131,115
BrandNXP
TWD12.40
Each (In a Pack of 25)
units
Single Tuner, VCO 1 8pF 30V - 12 Surface Mount SOD-323 2 0.5 to 28V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm
RS Stock No. 823-5655
Mfr. Part No.BB857H7902XTSA1
BrandInfineon
TWD6.90
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. 218-6283
Mfr. Part No.BBY5802VH6327XTSA1
BrandInfineon
TWD8.30
Each (On a Reel of 3000)
units
Single - 1 4.7pF 10V - - - TSLP-2-1 - - - - -
RS Stock No. 626-1958
Mfr. Part No.BB156,115
BrandNXP
TWD18.40
Each (In a Pack of 10)
units
Single VCO 1 14.4pF 10V - 2.7 Surface Mount SOD-323 2 1 to 7.5V 1.8 x 1.35 x 1.05mm 1.05mm 1.8mm
RS Stock No. 218-6284
Mfr. Part No.BBY5802VH6327XTSA1
BrandInfineon
TWD15.50
Each (In a Pack of 50)
units
Single - 1 4.7pF 10V - - - TSLP-2-1 - - - - -
RS Stock No. 546-442
Mfr. Part No.SVC383T-TL-E
BrandSanyo
TWD13.00
Each (In a Pack of 5)
units
Common Cathode, Dual Tuner - 482pF 33V 200 17.5 Surface Mount CPH 3 1 → 6.5V 2.9 x 1.6 x 0.9mm 0.9mm 2.9mm
RS Stock No. 166-0399
Mfr. Part No.BB145B,115
BrandNXP
TWD6.30
Each (On a Reel of 3000)
units
Single VCO 1 6.4pF 6V - 2 Surface Mount SOD-523 2 1 → 4V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 791-9591
Mfr. Part No.SVC704-TL-E
Brandonsemi
TWD17.40
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. 165-7448
Mfr. Part No.BBY5302VH6327XTSA1
BrandInfineon
TWD8.30
Each (On a Reel of 3000)
units
Single VCO 1 1.85pF 6V - 1.8 Surface Mount SC-79 2 1 → 3V 1.2 x 0.8 x 0.55mm 0.55mm 1.2mm
RS Stock No. 179-1058
Mfr. Part No.BB202,115
BrandNXP
TWD15.80
Each (On a Reel of 3000)
units
Single Tuner, VCO 1 28.2pF 6V - 2.5 Surface Mount SOD-523 2 0.2 → 2.3V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 626-1914
Mfr. Part No.BB145B,115
BrandNXP
TWD12.60
Each (In a Pack of 20)
units
Single VCO 1 6.4pF 6V - 2 Surface Mount SOD-523 2 1 to 4V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 505-8521
Mfr. Part No.BB640E6327HTSA1
BrandInfineon
TWD15.20
Each (In a Pack of 20)
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. 752-7892
Mfr. Part No.BBY5702VH6327XTSA1
BrandInfineon
TWD18.20
Each (In a Pack of 10)
units
Single VCO 1 4pF 10V - 3 Surface Mount SC-79 2 1 → 4V 1.2 x 0.8 x 0.55mm 0.55mm 1.2mm
RS Stock No. 161-1535
Mfr. Part No.5.0SMDJ26A
BrandBourns
TWD64.00
Each (In a Pack of 5)
units
Single - 1 - 26V - - Surface Mount DO-214AB (SMC) 2 - 7.11 x 6.22 x 2.31mm 2.31mm 7.11mm
RS Stock No. 653-1415
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
TWD13.00
Each (In a Pack of 10)
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. 166-1216
Mfr. Part No.BBY40,215
BrandNXP
TWD8.90
Each (On a Reel of 3000)
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. 761-6801
Mfr. Part No.RKV500KJ#P1Q
TWD0.70
Each (In a Pack of 15)
units
Single Tuner 1 14.15pF 35V - 6.3 Surface Mount SC-79 2 - 0.9 x 1.3 x 0.7mm 0.7mm 0.9mm