Varactor diodes, also known as varicap diodes, are a type of semiconductor diode used for a wide range of frequency control applications. The Varactor diode is characterized by its use as a voltage controlled capacitor. In essence, it works similarly to a normal diode, except that when a reverse bias voltage is applied to the diode, the capacitance or junction capacitance is affected by the voltage. As the reverse voltage increases, the capacitance decreases. This phenomenon is used to tune the resonant frequency of circuits or to modify the frequency response of amplifiers. Varactor diodes are used in oscillators and filters in various communication circuits and in test equipment.

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    BB175X


    Varactor Diodes VHF variable capacitance diode
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    NXP 27919
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    USD 0.275

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    2.7 pF32 V20 mASmd/SmtSmd/SmtSOD - 523 - 2- 55 C+ 125 CSingle Reel
    BB172X


    Varactor Diodes VHF variable capacitance diode
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    NXP 25821
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    USD 0.15

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    2.6 pF32 V20 mASmd/SmtSmd/SmtSOD - 323 - 2- 55 C+ 125 CSingle Reel
    MAVR-011020-14110P


    Varactor Diodes Ct Max .275pF -40C +125C
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    MACOM 12019
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    USD 2.6875

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    0.275 pF18 V1 mASmd/SmtSmd/SmtFLIP - CHIP- 40 C+ 125 CSingle Reel
    MA144769-287T


    Varactor Diodes Ct=1.2pF -65C +125C
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    MACOM 9376
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    USD 1.65

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    1.2 pF30 V50 mA Smd/SmtSOT - 23 - 3- 65 C+ 125 CSingle Reel
    MAVR-044769-12790T


    Varactor Diodes Rev. Voltage 30V Pwr Dis. 250mW
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    MACOM 5932
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    USD 1.5401

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    SVC710-TL-E


    Varactor Diodes FM VARICAP SINGLE VR 4V
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    ON Semiconductor 5615
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    USD 0.1419

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    21.6 pF15 V  Smd/SmtMCPH - 3    Reel
    BB131,135


    Varactor Diodes VHF 30V 17pF Variable Cap
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    NXP 4062
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    USD 0.1113

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    17 pF30 V20 mASmd/SmtSmd/SmtSOD - 323  Single Reel
    1SV324TPH3F


    Toshiba Varactor Diodes VARICAP DIODE
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    Toshiba 3076
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    USD 0.0837

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    44 pF10 V Smd/Smt USC - 2- 55 C+ 125 CSingle Reel
    SVC704-TL-E


    Diode VAR Cap Single 16V 26pF Automotive 3-Pin MCPH T/R
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    ON Semiconductor 2596
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    USD 0.205

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    30 pF16 V  Smd/SmtMCPH - 3  Dual Reel
    MAVR-000083-0287AT


    MACOM Varactor Diodes Cap ratio 7.8 Typical Q 450
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    MACOM 2280
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    USD 0.5141

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              Reel