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. 170-2060
Mfr. Part No.BB207
BrandNXP
€0.376
Each (On a Reel of 3000)
units
Common Cathode Tuner 2 76pF 15V - 2.6 Surface Mount SOT-23 (TO-236AB) 3 1 → 7.5V 3 x 1.4 x 1mm 1mm 3mm
RS Stock No. 626-2046
Mfr. Part No.BB207
BrandNXP
€0.30
Each (In a Pack of 10)
units
Common Cathode Tuner 2 76pF 15V - 2.6 Surface Mount SOT-23 (TO-236AB) 3 1 → 7.5V 3 x 1.4 x 1mm 1mm 3mm
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. 166-0356
Mfr. Part No.BB181,115
BrandNXP
€0.079
Each (On a Reel of 3000)
units
Single Tuner, VCO 1 8pF 30V - 12 Surface Mount SOD-523 2 0.5 → 28V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 179-1056
Mfr. Part No.BB135,115
BrandNXP
€0.07
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. 626-1914
Mfr. Part No.BB145B,115
BrandNXP
€0.111
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. 165-7448
Mfr. Part No.BBY5302VH6327XTSA1
BrandInfineon
€0.103
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. 124-5433
Mfr. Part No.SVC704-TL-E
€0.105
Each (On a Reel of 3000)
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. 653-1415
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
€0.21
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. 166-1176
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. 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
RS Stock No. 179-1058
Mfr. Part No.BB202,115
BrandNXP
€0.212
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. 145-9418
Mfr. Part No.BB439E6327HTSA1
BrandInfineon
€0.202
Each (On a Reel of 3000)
units
Single Tuner 1 4.3pF 28V - 5 Surface Mount SOD-323 2 - 1.7 x 1.25 x 0.85mm 0.85mm 1.7mm
RS Stock No. 626-1992
Mfr. Part No.BB181,115
BrandNXP
€0.246
Each (In a Pack of 30)
units
Single Tuner, VCO 1 8pF 30V - 12 Surface Mount SOD-523 2 0.5 to 28V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 178-7396
Mfr. Part No.BB814E6327GR1HTSA1
BrandInfineon
€0.096
Each (On a Reel of 3000)
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
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. 892-2393
Mfr. Part No.BB535E7904HTSA1
BrandInfineon
€0.078
Each (In a Pack of 120)
units
Single UHF-TV Tuner 1 1.9pF 30V - 8.2 Surface Mount SOD-323 2 1 → 28V 1.7 x 1.25 x 1mm 1mm 1.7mm
New
RS Stock No. 218-6283
Mfr. Part No.BBY5802VH6327XTSA1
BrandInfineon
€0.089
Each (On a Reel of 3000)
units
Single - 1 4.7pF 10V - - - TSLP-2-1 - - - - -
RS Stock No. 110-9106
Mfr. Part No.BB439E6327HTSA1
BrandInfineon
€0.444
Each (On a Tape of 40)
units
Single Tuner 1 4.3pF 28V - 5 Surface Mount SOD-323 2 - 1.7 x 1.25 x 0.85mm 0.85mm 1.7mm
RS Stock No. 890-2588
Mfr. Part No.1SV285(TPH3,F)
BrandToshiba
€0.115
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