Classification and performance parameters of high voltage pa
发布时间：2019-02-21 15:40
As for the capacitor with high voltage chip, he actually has another name, which is called ceramic multilayer chip capacitor. It can be regarded as a production process of ceramic powder. Its internal structure is precious metal Pd-Au structure. It is made by plating silver on ceramics as an electrode by high temperature sintering. Products are divided into high-frequency ceramic medium NP0 (COG) and low-frequency ceramic medium X7R two materials. NP0 is famous for its small size, small package size, high temperature resistance and good high frequency performance. So NP0 is almost used in high stability oscillation circuit, so it can be used as filter capacitor of circuit. X7R ceramic dielectric capacitors are limited to bypass or DC isolation in the circuit of normal working frequency, or in the case of low requirements for stability and loss. They are not suitable for use in AC pulse circuit, because they are easy to be broken down by pulse voltage, so they are not used in AC circuit.
classification
Temperature compensation type: NP0 quality NP0, also known as COG, has the most stable electrical performance, basically does not change with temperature, voltage and time. It belongs to ultra-stable, low-loss capacitive material type, and is suitable for high-frequency, ultra-high-frequency and ultra-high-frequency circuits requiring high stability and reliability.
High dielectric constant X7R dielectrics: X7R is a strong dielectrics, so it can produce capacitors with larger capacity than NPO dielectrics. The performance of this capacitor is relatively stable. With the change of temperature and voltage time, its unique performance does not change significantly. It belongs to the type of stable capacitor material. It is used in high frequency and medium frequency circuits with high reliability, such as isolation, coupling, bypass, filter circuit and so on.
Semiconductor X5R dielectrics: X5R has high dielectric constant, and is often used to produce large capacitor products with large specific capacity and high nominal capacity. However, its capacity stability is better than X7R, and its capacity and loss are sensitive to temperature and voltage. It is mainly used in oscillation, coupling, filtering and bypass circuits of the whole electronic machine.
Advantages: Small package size, stable quality, high insulation performance, high voltage resistance
Disadvantage: Small capacity, current maximum UF, easy to be broken down by pulse voltage.
performance parameter
Material NP0 (COG). X7R. X5R. Y52. Capacity 0.1PF-PF-1NF-1UF-UF3. Voltage 6.3-1K-2K-5K4. Packaging - Application Scope: Products are widely used in module power supply, automotive electronics, communication power supply, LED lighting power supply and other fields. Hardware has broad application prospects. Hard city is generally more professional, professional problem solving, which is the fastest and best way. It's better to fool around, because there are too many electronic models of electronic components that can be mistaken carelessly, so we still need professional help to solve them.
