Mobile phone chip capacitor types and characteristics
Tags: NPO X7R Z5U Y5V This article refers to the address: http:// Monolithic ceramic capacitors (commonly known as chip capacitors) are commonly used components at present. In terms of chip capacitors produced by AVX, there are different specifications such as NPO, X7R, Z5U, and Y5V, and different specifications have different uses. Below we only introduce the performance and application of the commonly used NPO, X7R, Z5U and Y5V and the ordering items that should be paid attention to in order to attract everyone's attention. Different companies may have different naming methods for the above different performance capacitors. Here we refer to the AVX company naming method. For other companies' products, please refer to the company's product manual. The main difference between NPO, X7R, Z5U and Y5V is that their filling media are different. In the same volume, the capacity of the capacitor composed of different filling media is different, and the dielectric loss and capacity stability of the capacitor are also different. Therefore, when using capacitors, different capacitors should be selected according to the different roles of capacitors in the circuit. An NPO capacitor NPO is one of the most commonly used monolithic ceramic capacitors with temperature compensation characteristics. Its filling medium consists of ruthenium, osmium and some other rare oxides. NPO capacitors are one of the most stable capacitors for capacitance and dielectric loss. The capacity change is 0 ± 30 ppm / ° C at temperatures from -55 ° C to + 125 ° C, and the capacitance changes with frequency less than ± 0.3 ΔC. The drift or hysteresis of the NPO capacitor is less than ±0.05%, which is negligible relative to film capacitance greater than ±2%. Its typical capacity changes by less than ±0.1% relative to the service life. NPO capacitors vary in capacitance and dielectric loss with frequency depending on the package form. Large package sizes are better than small package sizes. NPO capacitors are suitable for use in oscillators, tank tank capacitors, and coupling capacitors in high frequency circuits. Two X7R capacitors The X7R capacitor is called a temperature stable ceramic capacitor. When the temperature changes from -55 ° C to +125 ° C, its capacity changes to 15%. It should be noted that the capacitor capacity change is nonlinear at this time. The capacity of the X7R capacitor is different under different voltage and frequency conditions, and it also changes with time, about 1% ΔC every 10 years, showing a change of about 5% in 10 years. X7R capacitors are mainly used in less demanding industrial applications, and their capacity changes are acceptable when the voltage changes. Its main feature is that the capacitance can be made larger under the same volume. Three Z5U capacitor Z5U capacitors are called "universal" ceramic monolithic capacitors. The first thing to consider here is the temperature range of use. The main reason for the Z5U capacitor is its small size and low cost. For the above three ceramic monolithic capacitors, the Z5U capacitor has the largest capacitance at the same volume. However, its capacitance is greatly affected by environmental and working conditions, and its aging rate can be reduced by up to 5% every 10 years. Despite its unstable capacity, it has a wide range of applications due to its small size, low equivalent series inductance (ESL) and low equivalent series resistance (ESR), and good frequency response. Especially in the application of decoupling circuits. The table below gives the range of values ​​for the Z5U capacitor. Other technical indicators of Z5U capacitors are as follows: Operating temperature range +10 ° C --- +85 ° C Temperature characteristics +22% ---- -56% Media loss up to 4% Four Y5V capacitors The Y5V capacitor is a general-purpose capacitor with a temperature limit of +22% to -82% in the range of -30 ° C to 85 ° C. The high dielectric constant of Y5V allows the fabrication of capacitors up to 4.7μF in smaller physical sizes. The value range of the Y5V capacitor is shown in the following table. Other technical indicators of Y5V capacitors are as follows: Operating temperature range -30 ° C --- +85 ° C Temperature characteristics +22% ---- -82% Media loss up to 5% The chip capacitor naming method can be found on the AVX website. Different company naming methods may be slightly different. Commercial Coffee Urn,Coffee Urn,100 Cup Coffee Urn,Large Coffee Urn FOSHAN FORTUNE ELECTRICAL APPLIANCE CO.,LTD , https://www.coffelady.com