Skyworks Solutions Inc. SMV2019-040LF
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- SMV2019-040LF
- Skyworks Solutions Inc.
- DIODE VARACTOR
- Diodes - Variable Capacitance (Varicaps, Varactors)
- SMV2019-040LF Datasheet
- SOD-882
- Tape & Reel (TR)
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Lead free / RoHS Compliant - 3026
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- 1 year quality assurance 》
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What is SMV2019-040LF
Skyworks Solutions Inc. Part Number SMV2019-040LF（Diodes - Variable Capacitance (Varicaps, Varactors)）, developed and manufactured by Skyworks Solutions Inc., distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.
SMV2019-040LF is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.
SMV2019-040LF Specifications
- Part NumberSMV2019-040LF
- CategoryDiodes - Variable Capacitance (Varicaps, Varactors)
- ManufacturerSkyworks Solutions Inc.
- DescriptionDIODE VARACTOR
- PackageTape & Reel (TR)
- Series-
- Operating Temperature-55°C ~ 125°C (TJ)
- Mounting TypeSurface Mount
- Package / CaseSOD-882
- Supplier Device PackageSOD-882
- Diode TypeSingle
- Voltage - Peak Reverse (Max)22 V
- Capacitance @ Vr, F0.34pF @ 20V, 50MHz
- Capacitance Ratio2.3
- Capacitance Ratio ConditionC4/C20
- Q @ Vr, F500 @ 4V, 50MHz
Application of SMV2019-040LF
SMV2019-040LF Datasheet
SMV2019-040LF Datasheet , Tape & Reel (TR),-55°C ~ 125°C (TJ),Surface Mount,SOD-882,SOD-882,Single,22 V,0.34pF @ 20V, 50MHz,2.3,C4/C20,500 @ 4V, 50MHz
SMV2019-040LF Classification
Diodes - Variable Capacitance (Varicaps, Varactors)
FAQ about Diodes - Variable Capacitance (Varicaps, Varactors)
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1. Is a diode a variable capacitor?
The diode itself is not a variable capacitor, but a varactor diode has the characteristic of variable reactance and can be regarded as a special variable capacitor.
A varactor diode is a special diode made by using the characteristic that the size of the junction capacitance changes with the applied voltage when the PN junction is reverse biased. When the reverse bias voltage increases, the junction capacitance decreases; conversely, the junction capacitance increases. The capacitance of this diode is generally small, with a maximum value of tens of picofarads to hundreds of picofarads, and the ratio of maximum capacitance to minimum capacitance is about 5:1. Varactors are mainly used in high-frequency circuits for automatic tuning, frequency modulation, and phase modulation, such as as variable capacitors in the tuning circuit of a television receiver.
The working principle of a varactor diode is based on the reverse bias and charge accumulation effect of a PN junction. When a reverse voltage is applied to a PN junction, the charge accumulates to form a barrier layer similar to a capacitor. As the reverse voltage changes, the thickness of the barrier layer changes, resulting in a change in the junction capacitance. This phenomenon of dynamic capacitance change with reverse voltage enables varactor diodes to play an important role in high-frequency circuits. -
2. What is a variable capacitor?
Variable capacitor, also known as variable capacitor, is a capacitor whose capacitance can be adjusted within a certain range. Its working principle is to change the capacitance value by changing the relative effective area or distance between the pole pieces. Common variable capacitors include mechanical, electronic and piezoelectric types.
Classification
Mechanical variable capacitor: Change the capacitance value by rotating or moving the metal plate.
Electronic variable capacitor: Change the capacitance value by changing the reverse voltage of the PN junction.
Piezoelectric variable capacitor: Use certain crystal materials to produce polarization when subjected to mechanical stress, thereby changing the capacitance value. -
3. What is the use of varactor diodes?
The main uses of varactor diodes include the following aspects:
High-frequency tuning and communication: The varactor diode uses the characteristics of the PN junction capacitance changing with the applied voltage to be used as a variable capacitor in high-frequency tuning and communication circuits to achieve functions such as automatic tuning, frequency modulation, and phase modulation.
Wireless communication: In wireless communication systems, varactors are often used in tuning circuits, such as receivers and transmitters that tune VHF and UHF bands. By changing the reverse bias voltage, the resonant frequency of the circuit can be adjusted, thereby achieving frequency selection.
RF signal processing: In RF signal processing, varactors are used to achieve frequency modulation and phase modulation. They can be used as part of a tunable filter to select signals of a specific frequency.
Oscillator: In an LC oscillator, a varactor can be used as a tunable capacitor to adjust the oscillation frequency. This application is very common in radio equipment.
Automatic gain control: In some communication systems, varactors can be used for automatic gain control to adapt to different signal strengths by adjusting the gain of the circuit.
Tuning circuit: In a tuning circuit, a varactor can be used to adjust the resonant frequency of the circuit to match different signal sources.
Analog multiplier: Varactors are used as variable capacitors in analog multipliers to achieve signal multiplication.
Electronic music equipment: In electronic music equipment, varactors can be used to modulate sound and produce special sound effects.
Precision Electronics: In precision electronic devices, varactor diodes can be used to achieve precise voltage control and signal processing.
Sensors: In some types of sensors, varactor diodes can be used to detect physical quantities such as pressure and temperature, reflecting changes in the measured value by changing the capacitance value.
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