Varactor Diodes

The Varactor Diode gets its name from the variable nature of the diode its self. It is a special type of diode designed for variable capacitance.
How do they work?
In order to achieve a specific variance in capacitance, the 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.
Features and benefits:
• Very small and light weight
• Little noise from the component
• Very low cost
• Increase in a reverse bias will increase the capacitance
• Very easy to mount and replace
• High capacitance ratios
• Very low resistance
Where might I use one?
• Satellites
• TV tuners
• 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. 857-8129
Mfr. Part No.BBY6605WH6327XTSA1
BrandInfineon
TWD7
Each (On a Reel of 3000)
units
Common Cathode VCO in Mobile Communication 2 12pF 12V - 5 Surface Mount SOT-323 (SC-70) 3 1 V, 4.5 V 2 x 1.25 x 0.8mm 0.8mm 2mm
RS Stock No. 626-1891
Mfr. Part No.BB135,115
BrandNXP
TWD2
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. 890-2581
Mfr. Part No.1SV305,H3F(T
BrandToshiba
TWD5
Each (In a Pack of 25)
units
Single VHF Band Radio 1 5.3pF 10V - - Surface Mount 1-1G1A 2 1 → 4V 1.2 x 0.8 x 0.6mm 0.6mm 1.2mm
New
RS Stock No. 179-1056
Mfr. Part No.BB135,115
BrandNXP
TWD3
Each (On a Reel of 3000)
units
- - - - - - - - - - - - - -
RS Stock No. 890-2588
Mfr. Part No.1SV285(TPH3,F)
BrandToshiba
TWD6
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. 892-2349
Mfr. Part No.BB833E6327HTSA1
BrandInfineon
TWD6
Each (In a Pack of 60)
units
Single TV-sat Tuner 1 0.6pF 30V - 11 Surface Mount SOD-323 2 1 → 28V 1.7 x 1.25 x 1mm 1mm 1.7mm
RS Stock No. 626-1914
Mfr. Part No.BB145B,115
BrandNXP
TWD12
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. 110-9116
Mfr. Part No.BB639CE7904HTSA1
BrandInfineon
TWD3
Each (In a Pack of 150)
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. 761-6810
Mfr. Part No.RKV502KJ#P1Q
TWD1
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. 791-9572
Mfr. Part No.SVC230-TB-E
TWD8
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. 165-7472
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
TWD2
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. 161-1528
Mfr. Part No.5.0SMDJ26A
BrandBourns
TWD31
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. 166-0533
Mfr. Part No.BB208-02,115
BrandNXP
TWD9
Each (On a Reel of 3000)
units
Single TCXO, Tune, VCXO 1 19.9pF 10V - 3.7 Surface Mount SOD-523 2 1 → 7.5V 1.25 x 0.85 x 0.65mm 0.65mm 1.25mm
RS Stock No. 166-0356
Mfr. Part No.BB181,115
BrandNXP
TWD3
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. 653-1415
Mfr. Part No.BB639E7904HTSA1
BrandInfineon
TWD10
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. 166-0399
Mfr. Part No.BB145B,115
BrandNXP
TWD5
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. 791-9576
Mfr. Part No.SVC236-TB-E
TWD11
Each (In a Pack of 15)
units
Common Cathode Tuner 2 14.44pF 16V 70 5 Surface Mount SOT-23 3 1 to 6.5V 2.9 x 1.5 x 1.1mm 1.1mm 2.9mm
RS Stock No. 110-9106
Mfr. Part No.BB439E6327HTSA1
BrandInfineon
TWD13
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. 826-9005
Mfr. Part No.BB914E6327HTSA1
BrandInfineon
TWD6
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. 826-9099
Mfr. Part No.BB66402VH7902XTSA1
BrandInfineon
TWD5
Each (In a Pack of 200)
units
Single VHF TV Tuner 1 2.4pF 30V - 15 Surface Mount SC-79 2 28V 1.2 x 0.8 x 0.55mm 0.55mm 1.2mm