SMV1236-011LF Discrete Semiconductor Products

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Variable Capacitance Diodes, more commonly known as Varicaps, Varactors, or their scientific name, Diodes of Variable Capacitance, are a widely used type of diode. They are used for a variety of applications, including usage in FM radios and tuning circuits, voltage-controlled oscillators, phase-locked loops, and other applications that require a constantly changing capacitance.

The SMV1236-011LF is a Variable Capacitance Diode that was designed with an emphasis on low capacitance variation and low small-signal capacitance variation. It features a low leakage current, low noise and low parasitic elements, and is suitable for use in precision tuning applications.

This diode utilizes a silicone nitride encapsulation that is designed to reduce heat dissipation and thermal loading. The SMV1236-011LF can be operated at a frequency as high as 100 MHz with a capacitance of 1.5pF and a capacitance variation at f0 of 0.7pF.

The operating principle of the SMV1236-011LF is based on the capacitance-voltage (CV) curve of a semiconductor junction. When the voltage is increased the junction’s capacitance decreases and when the voltage is decreased the junction’s capacitance increases. This is due to the charge stored on the junction due to the built-in electric field created by the forward biased junction. By connecting the diode between two pins, the capacitance can be made to vary linearly with voltage, thus making it an ideal choice for applications such as frequency control and tuning circuits.

The SMV1236-011LF is ideally suited for applications where low-noise performance and low capacitance variation are required. The low-noise performance is due to the integrated shield and the device\'s low capacitance variation due to its low capacitance variation and low small-signal capacitance variation. Its integrated shield also serves to reduce the chance of interference in adjacent devices, making it suitable for use in precision tuning applications.

In short, the SMV1236-011LF is an excellent choice for applications that require precision tuning, such as phase-locked loops, voltage-controlled oscillators, and FM radio and tuning circuits. Its low noise performance, low capacitance variation, and low parasitic elements make it an ideal choice for such applications. Additionally, its silicone nitride encapsulation makes it capable of handling high frequencies and thermal loading.

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