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Varactor Diodes

Varactor diodes are semiconductor diodes designed to operate in reverse bias and are used in radio frequency (RF) tuning of capacitive voltage-controlled variable circuits. These devices store the charge and are ideal for various environments and microprocessors requiring voltage control. These diodes are designed in a way that displays better transition capacity than conventional diodes.

What are the Alternate Names for Varactor Diodes?

The varactor diode is also referred to as the Voltcap, Voltage Variable Capacitance, Varicap, or Tunning diode.

What are the Advantages of Varactor Diodes?

They are beneficial in terms of what they offer:

  • Less noise as compared to the other diode
  • Cost-effective
  • Miniature size and lightweight
  • Highly reliable

What are the Types of Varactor Diodes?

They are classified into the following types. 

  • Abrupt Varactor Diodes- the most widely used type of varactor where the doping concentration is held constant, triggering the junction abruptness. They are designed to be used in low resistance and high capacitance applications. 
  • Hyperabrupt Varactor Diodes- designed to provide much higher capacitance variations for voltage changes. 

What are the Typical Applications of Varactor Diodes?

These Varicap diodes are the crucial components in a wide variety of different applications, including:

  • DVD Devices
  • TV Tuning
  • Satellites
  • Self-balanced Bridge Circuits
  • Voltage-controlled Oscillators
  • RF Tuning (Radios)
  • Parametric Amplifiers
  • Frequency Synthesisers
  • Variable Capacitors

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BB814E6327GR1HTSA1, Infineon
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BB202,115, NXP
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BB135,115, NXP
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BB145B,115, NXP
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BB639CE7904HTSA1, Infineon
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BBY6502VH6327XTSA1, Infineon
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BBY5502VH6327XTSA1, Infineon
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BB439E6327HTSA1, Infineon
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BBY5302VH6327XTSA1, Infineon
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BB639E7904HTSA1, Infineon
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BBY5802VH6327XTSA1, Infineon
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BB207, NXP
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BBY6602VH6327XTSA1, Infineon
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BB208-03,115, NXP
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BB 439 E6327, Infineon
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SVC230-TB-E, onsemi
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BB640E6327HTSA1, Infineon
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5.0SMDJ26A, Bourns
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BB135,115, NXP

BB135,115, NXP

Varicap Diodes / Varactor Diodes, NXP Semiconductors Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, NXP Semiconductors NXP offers an extensive range of switching diodes, in different packages and configurations.
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BB804SF1E6327, Infineon

BB804SF1E6327, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
BB439E6327HTSA1, Infineon

BB439E6327HTSA1, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
5.0SMDJ26A, Bourns

5.0SMDJ26A, Bourns

Bourns chip diodes are an ideal solution for the portable communication, computing, and media and data markets for applications that include: power protection, voltage clamping, digital signal switching and low power signal rectification. In addition to the benefits of low power consumption and maximal standby time, these RoHS compliant chip diodes feature superior packaging. The diode's low profile design reduces rollaway and leadless package options, minimizes the footprint, and improves electrical performance. RoHS compliant and halogen free Surface mount SMC package Standoff voltage:12 to 170 volts Peak Pulse Power: 5000 watts Typical temperature coefficient: DVBR= 0.1% xVBR @ 25°C xDT
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BB639E7904, Infineon

BB639E7904, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
BB135, NXP

BB135, NXP

Varicap Diodes / Varactor Diodes, NXP Semiconductors Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, NXP Semiconductors NXP offers an extensive range of switching diodes, in different packages and configurations.
New items
BBY55-02VH6327, Infineon

BBY55-02VH6327, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
BBY5503WE6327HTSA1, Infineon

BBY5503WE6327HTSA1, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
1SV305,H3F(T, Toshiba

1SV305,H3F(T, Toshiba

Varicap Diodes / Varactor Diodes, Toshiba Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of applications, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Toshiba
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BB914E6327HTSA1, Infineon

BB914E6327HTSA1, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers. Diodes and Rectifiers, Infineon
New items
BB 439 E6327, Infineon

BB 439 E6327, Infineon

Varicap Diodes / Varactor Diodes, Infineon Variable Capacitance Diodes, commonly known as Varicap, Varactor or Tuning diodes, are useful in many applications where a change in capacitance derived from a change in voltage is required. They are suitable for use in a wide range of application, including RF tuning, Voltage Controlled Oscillators and filters, Frequency Synthesizers and Multipliers.
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