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. 626-1992
Mfr. Part No.BB181,115
BrandNXP
$0.483
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. 162-9647
Mfr. Part No.SVC236-TB-E
$0.362
Each (On a Reel of 3000)
units
Common Cathode Tuner 2 14.44pF 16V 70 5 Surface Mount SOT-23 3 1 → 6.5V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm
RS Stock No. 178-7396
Mfr. Part No.BB814E6327GR1HTSA1
BrandInfineon
$0.169
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. 826-9314
Mfr. Part No.BB814E6327GR1HTSA1
BrandInfineon
$0.329
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. 626-2074
Mfr. Part No.BB202,115
BrandNXP
$0.917
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. 752-7899
Mfr. Part No.BBY5302VH6327XTSA1
BrandInfineon
$0.795
Each (In a Pack of 10)
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
New
RS Stock No. 218-6281
Mfr. Part No.BBY5502VH6327XTSA1
BrandInfineon
$0.171
Each (On a Reel of 3000)
units
Single - 1 6pF 16V - - - SC79 2 - - - -
New
RS Stock No. 218-6282
Mfr. Part No.BBY5502VH6327XTSA1
BrandInfineon
$0.236
Each (In a Pack of 50)
units
Single - 1 6pF 16V - - - SC79 2 - - - -
RS Stock No. 826-9005
Mfr. Part No.BB914E6327HTSA1
BrandInfineon
$0.269
Each (In a Pack of 100)
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
RS Stock No. 179-1058
Mfr. Part No.BB202,115
BrandNXP
$0.809
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
New
RS Stock No. 218-6283
Mfr. Part No.BBY5802VH6327XTSA1
BrandInfineon
$0.171
Each (On a Reel of 3000)
units
Single - 1 4.7pF 10V - - - TSLP-2-1 - - - - -
RS Stock No. 165-7448
Mfr. Part No.BBY5302VH6327XTSA1
BrandInfineon
$0.245
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. 761-6801
Mfr. Part No.RKV500KJ#P1Q
$0.039
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
RS Stock No. 761-6810
Mfr. Part No.RKV502KJ#P1Q
$0.039
Each (In a Pack of 15)
units
Single Tuner 1 41.5pF 35V - 14.5 Surface Mount SC-79 2 - 0.9 x 1.3 x 0.7mm 0.7mm 0.9mm
RS Stock No. 179-1056
Mfr. Part No.BB135,115
BrandNXP
$0.212
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. 161-1528
Mfr. Part No.5.0SMDJ26A
BrandBourns
$1.22
Each (On a Reel of 3000)
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. 791-9572
Mfr. Part No.SVC230-TB-E
$0.487
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. 145-9418
Mfr. Part No.BB439E6327HTSA1
BrandInfineon
$0.402
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. 505-8521
Mfr. Part No.BB640E6327HTSA1
BrandInfineon
$0.666
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. 178-7399
Mfr. Part No.BB837E6327HTSA1
BrandInfineon
$0.192
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