What kind of capacitor can be called "high frequency capacitor"

Date：2021-08-11 Viewed：2442

What kind of capacitor is a high frequency capacitor? There is no difference between low frequency and high frequency in an ideal capacitor, but in fact, depending on the manufacturer's capacitor technology and medium, the frequency will produce different losses, so there are high frequency chip capacitors and low frequency capacitors. To be precise, it is not capacitors that produce high frequency or low frequency, but capacitors are suitable for high frequency or low frequency circuits.

Well-known high-frequency capacitors in daily life include CBB capacitors, mica capacitors, monolithic capacitors, porcelain dielectric capacitors, etc. Whether high-frequency or low-frequency capacitors depend on their manufacturing materials and structures, and have no direct relationship with the capacity of capacitors. High-frequency capacitors are suitable for high-frequency filters such as computer mainboards and switching power supplies.

Characteristics of high frequency capacitor
(1) the high-frequency capacitor adopts instantaneous microwave dielectric material, which has small temperature coefficient and good stability, and the capacitor is not affected by time, DC and AC signals;
(2) Compared with the traditional chip capacitor, the loss of high-frequency capacitor is also very low. If the circuit requires a long life, it is wise to use high-frequency capacitor.
(3)Q value is extremely high and ESR is extremely low;

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What kind of capacitor can be called "high frequency capacitor"

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