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Monolithic capacitors, what is the difference between ceramics capacitors, ceramic capacitors?

by:SMiLer     2021-02-18
Monolithic capacitors, ceramics are common capacitance of the capacitor, ceramic components, one of the monolithic capacitor is stable, small temperature drift coefficient, capacitance value can be 1 uf, long life, the equivalent dc resistance is small, the price is a bit expensive. Ceramics with high frequency characteristics of capacitance is good, but the capacitance value biggest can only be 0. 1uF。 Ceramics capacitor also belong to a kind of ceramic capacitors, ceramic capacitors is general. Ceramics capacitors is a ceramic material used as dielectric, the ceramic surface coated with a layer of metal film, then through high heat sintering as electrode of capacitor. Is typically used for high and stable in the oscillation circuit, as a loop, bypass capacitors and padding capacitor. This kind of capacitor is unfavorable use in pulse circuit, because they are easy to be pulse voltage breakdown. And ceramic capacitor use high dielectric constant of a ceramic capacitor < barium titanate a titanium oxide> squeezed into a circular tube, the wafer or disk as a medium, and burn infiltration method will be the silver plating on ceramic as electrode is made. It is divided into high frequency porcelain medium and low frequency dielectric. Has a small positive temperature coefficient of capacitance of the capacitor, used in high stable oscillator circuit, as circuit capacitors and padding capacitor. Low-frequency ceramic capacitor is limited to the working frequency low loop for bypass or separated dc, or stability and loss of <>, including high frequency is not high. This kind of capacitor is unfavorable use in pulse circuit, because they are easy to be pulse voltage breakdown. Through the above simple introduction, whether to understand the three types of capacitance. We can according to the analysis and choose the required capacitance, avoid blind choice affect its function. And these three capacitance is not to replace. Ceramics capacitors: ceramics capacitors is a ceramic material used as dielectric, the ceramic surface coated with a layer of metal film, then through high heat sintering as electrodes of a capacitor. Is typically used for high and stable in the oscillation circuit, as a loop, bypass capacitors and padding capacitor. High frequency porcelain medium and low frequency dielectric ceramics capacitors points two kinds. Has a small positive temperature coefficient of capacitance of the capacitor, used in high stable oscillator circuit, as circuit capacitors and padding capacitor. Low-frequency ceramic capacitor is limited to the working frequency low loop for bypass or separated dc, or stability and loss of <>, including high frequency is not high. This kind of capacitor is unfavorable use in pulse circuit, because they are easy to be pulse voltage breakdown. Advantage: stable, by good insulation and high resistance to high pressure faults: the relatively small capacity monolithic capacitors: monolithic capacitors is multilayer ceramic capacitor's nickname, and according to the materials used, can be divided into three categories. Type of temperature compensation for NPO dielectric this capacitor electric performance is the most stable, basically does not change with temperature, voltage, time, is a super stable capacitance material type, low loss and applicable in higher requirements for stability, reliability, high frequency, uhf and VHF circuits. Second high dielectric constant for X7R dielectric because of X7R is a kind of strong dielectric, and thus can produce capacity greater than NPO dielectric capacitor. The condenser performance is stable, with the change of temperature, voltage, time, its specific performance is not significantly change, belongs to the stable capacitance material type, use straight, coupling, alongside the road, to the filter circuit and high reliability requirements of high frequency circuits. Three classes for the semiconductor Y5V has high dielectric constant, dielectric this capacitor is often used in the production of large volume, high nominal capacity of the large capacity capacitor products. But its stability is worse than X7R capacity, capacity, loss are more sensitive to the test conditions, such as temperature, voltage, mainly used in electronic oscillation of the whole machine, coupling, filtering and bypass circuit. Characteristics: good temperature characteristic, good frequency characteristic. A capacitor with higher frequency, electric capacity decline in law, monolithic capacitor drop less, capacity is stable. Ceramic capacitors, ceramic capacitors use high dielectric constant of a ceramic capacitor < barium titanate a titanium oxide> squeezed into a circular tube, the wafer or disk as a medium, and burn infiltration method will be the silver plating on ceramic as electrode is made. It is divided into high frequency porcelain medium and low frequency dielectric. Has a small positive temperature coefficient of capacitance of the capacitor, used in high stable oscillator circuit, as circuit capacitors and padding capacitor. Low-frequency ceramic capacitor is limited to the working frequency low loop for bypass or separated dc, or stability and loss of <>, including high frequency is not high.
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