SMV1212-079LF Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance @ Vr, F:	12pF @ 4V, 50MHz
Capacitance Ratio:	5
Capacitance Ratio Condition:	C1/C4
Voltage - Peak Reverse (Max):	12V
Diode Type:	Single
Q @ Vr, F:	--
Operating Temperature:	-55°C ~ 125°C (TJ)
Package / Case:	SC-79, SOD-523
Supplier Device Package:	SC-79

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Introduction

SMV1212-079LF is a type of diode specifically used in Variable Capacitance (Varicaps, Varactors). It is a high frequency, surface mount diode primarily used in RF applications between 800-1000 MHz. This diode has been manufactured to provide a wide range of capacitance variations and low insertion loss, allowing it to be used for many different applications.

Application Field

SMV1212-079LF is mainly used for RF applications between 800-1000MHz, including wideband microwave components, such as phase shifters, oscillators and tuned voltage-controlled oscillators. Due to its high Q and low parasitic capacitance, SMV1212-079LF can also be used in general-purpose amplifiers, filters and low-noise circuits. Other applications include voltage-controlled capacitors, voltage-controlled attenuators and impedance matching devices. SMV1212-079LF is capable of providing excellent phase control performance, making it an ideal choice for modern digital communication platforms. Its low noise and low power dissipation also make it suitable for use in sensor systems, such as microwave sensors for radar, navigation and remote control systems.

Working Principle

SMV1212-079LF is a type of diode based on the Varicap or Varactor principle. A Varicap diode is a semiconductor junction that exhibits a reverse biased junction capacitance that varies with voltage. When a reverse bias voltage is applied, charge carrier diffusion causes electrons to flow away from the junction and the resulting depletion layer provides an analogous capacitor action. The capacitance across the junction then becomes dependent on the reverse bias voltage applied. The Varicap diode is commonly used in frequency modulation circuits as a voltage-controlled capacitor. As the reverse bias voltage is varied, the capacitance changes accordingly and produces a frequency change in the output signal. This allows the user to adjust the frequency of a signal without having to adjust the inductance or capacitance of fixed inductors and capacitors.

Conclusion

SMV1212-079LF is a type of high frequency, surface mount diode primarily used in RF applications between 800-1000 MHz. It offers excellent performance in terms of insertion loss, wide range of capacitance variations, and excellent phase control. Due to these benefits, SMV1212-079LF can be used for many applications, such as wideband microwave components, general-purpose amplifiers and filters, sensor systems, and voltage-controlled attenuators. Additionally, it works on the Varicap or Varactor principle, making it suitable for frequency modulation circuits.

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