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What is a Ceramic Capacitor
2021-08-06 14:45:00
Ceramic capacitors (ceramic capacitors; ceramic capacitors) use ceramics as the dielectric, spray a silver layer on both sides of the ceramic substrate, and then fire at a low temperature to form a silver film as a plate. Its shape is mostly sheet, but also tubular, round and so on.
Ceramic capacitors are a general term for capacitors with ceramic materials as the medium. There are many kinds of it, (CG capacitors, Y capacitors, high-voltage ceramic capacitors, AC ceramic safety capacitors) have very different dimensions. Can be divided into high voltage, medium voltage and low voltage ceramic capacitors. According to the temperature coefficient, the dielectric constant can be divided into negative temperature coefficient, positive temperature coefficient, zero temperature coefficient, high dielectric constant, low dielectric constant, etc. In addition, there are classification methods for types I, II, and III. Compared with other capacitors, ceramic capacitors have the advantages of high operating temperature, large specific capacity, good moisture resistance, small dielectric loss, and wide selection of capacitance temperature coefficients. Widely used in electronic circuits, the amount is considerable.
These are Y5V, X5R, X7R, NPO(COG)
What do these materials mean? The first indicates low temperatures, the second indicates high temperatures, and the third indicates deviations.
Y5V means that it works at -30~+85 degrees, and the deviation in the entire temperature range is -82%~+22%
X5R means that it works at -55~+85 degrees, and the deviation in the entire temperature range is plus or minus 15%.
X7R means that it works at -55~+125 degrees, and the deviation in the entire temperature range is plus or minus 15%.
NPO (COG) is the capacitor with the most stable temperature characteristics. Capacitance temperature drift (what is temperature drift? You can check it online), the capacity of the whole temperature range is very stable, the temperature is also -55~125 degrees, suitable for oscillators, super high Frequency filter decoupling, but the capacity is generally not large, thousands of pf.
What are ceramic capacitors?
Ceramic capacitors are divided into high-frequency ceramic capacitors and low-frequency ceramic capacitors. Capacitors with a small temperature coefficient of positive capacitance are used as loop capacitors in highly stable oscillation circuits. Low-frequency ceramic capacitors are used in occasions with low requirements for stability and loss or circuits with low operating frequency are easily broken down by pulse voltage and cannot be used in pulse circuits. High-frequency ceramic capacitors are suitable for high-frequency circuits.
Ceramic capacitors are a general term for capacitors with ceramic materials as the medium. There are many kinds of it, (CG capacitors, Y capacitors, high-voltage ceramic capacitors, AC ceramic safety capacitors) have very different dimensions. Can be divided into high voltage, medium voltage and low voltage ceramic capacitors. According to the temperature coefficient, the dielectric constant can be divided into negative temperature coefficient, positive temperature coefficient, zero temperature coefficient, high dielectric constant, low dielectric constant, etc. In addition, there are classification methods for types I, II, and III. Compared with other capacitors, ceramic capacitors have the advantages of high operating temperature, large specific capacity, good moisture resistance, small dielectric loss, and wide selection of capacitance temperature coefficients. Widely used in electronic circuits, the amount is considerable.
These are Y5V, X5R, X7R, NPO(COG)
What do these materials mean? The first indicates low temperatures, the second indicates high temperatures, and the third indicates deviations.
Y5V means that it works at -30~+85 degrees, and the deviation in the entire temperature range is -82%~+22%
X5R means that it works at -55~+85 degrees, and the deviation in the entire temperature range is plus or minus 15%.
X7R means that it works at -55~+125 degrees, and the deviation in the entire temperature range is plus or minus 15%.
NPO (COG) is the capacitor with the most stable temperature characteristics. Capacitance temperature drift (what is temperature drift? You can check it online), the capacity of the whole temperature range is very stable, the temperature is also -55~125 degrees, suitable for oscillators, super high Frequency filter decoupling, but the capacity is generally not large, thousands of pf.
What are ceramic capacitors?
Ceramic capacitors are divided into high-frequency ceramic capacitors and low-frequency ceramic capacitors. Capacitors with a small temperature coefficient of positive capacitance are used as loop capacitors in highly stable oscillation circuits. Low-frequency ceramic capacitors are used in occasions with low requirements for stability and loss or circuits with low operating frequency are easily broken down by pulse voltage and cannot be used in pulse circuits. High-frequency ceramic capacitors are suitable for high-frequency circuits.
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