MA2SV0900L Discrete Semiconductor Products

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The MA2SV0900L is a type of varicap diode, also referred to as a voltage-variable capacitance diode or varactor diode.

A varicap diode is an active semiconductor component that exhibits a controlled variation of capacitance as the voltage across it is adjusted with respect to its two terminals. Its capacitance over the applied voltage range is a semicircular shaped logarithmic curve deriving from a combination of the space charge layer and junction capacitor effect. The frequency response of a varicap diode depends on the applied reverse bias and the separation of its outer leads.

The MA2SV0900L varicap diode is constructed of two crystalline silicon sections: an n+ section and a p- section. It contains the relatively thin \'pin\' junction. The total capacitance of the device is dependent on the space charge layer and junction capacitance, as well as its physical construction. Its typical capacitance range is 5.6 to 20pF with a typical reverse voltage as high as 28V.

The MA2SV0900L has a wide range of applications. It\'s especially useful in radio frequency and microwave applications. It can be used in tank circuits, harmonic generators, frequency multipliers, phase detector circuits and voltage-controlled oscillators (VCOs) used in synthesizers and frequency-hopping signals. It can also be used for tuning a Piezo-detector in microwave low noise amplifiers, for tuning filters in communication packages, for frequency control in receivers and for frequency modulation.

The MA2SV0900L works on the principle of charge accumulation and carrier depletion effect. As the voltage is applied, an electric field begins to generate across the p-n junction. This field induces a charge to accumulate over the junction and comprises of two components: the space charge layer and the junction capacitance. This results in an inverse proportionality between the capacitance and the applied voltage, causing it to vary over the applied voltage range.

The MA2SV0900L is a highly reliable, low cost, variable capacitance diode with a wide range of applications. It\'s widely used due to its wide capacitance range, low operating voltage and low cost. Its use in microwave applications and high frequency filters makes it an indispensable component in modern electronic systems.

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