What are the types and characteristics of chip capacitors?
SMD ceramic resistors are commonly used components with a relatively large amount at present. There are different specifications such as NPO, X7R, X5R, Y5V, etc., and different specifications have different uses. On the commonly used NPO, X7R, X5R and Y5V, we will introduce their performance and application and the ordering matters that should be paid attention to in purchasing. NPO, X7R, X5R and Y5V are the code names of the temperature characteristics of the capacitor, which are mainly caused by the different filling medium of the capacitor. The capacity, dielectric loss, and capacity stability of capacitors filled with different dielectrics are also different. Therefore, when using capacitors, different capacitors should be selected according to their different functions in the circuit.
1. NPO capacitors
NPO is one of the most commonly used monolithic ceramic capacitors with temperature compensation. Its filling medium is composed of rubidium, samarium and some other rare oxides. NPO capacitors are one of the capacitors with the most stable capacitance and dielectric loss. . NPO capacitors have different characteristics of capacitance and dielectric loss with frequency depending on the package form, and the frequency characteristics of large package size are better than those of small package size.
NPO capacitors are suitable for tank capacitors in oscillators, resonators, and coupling capacitors in high frequency circuits.
2. X7R capacitors
X7R capacitors are called temperature-stable ceramic capacitors. When the temperature is from -55°C to +125°C, its capacity change is 15%. It should be noted that the capacitance change of the capacitor is nonlinear at this time. X7R capacitors are mainly used in industrial applications with low requirements, and their capacity changes when the voltage changes. are acceptable conditions. Its main feature is that the capacitance can be relatively large under the same volume.
3. Y5V capacitor
The Y5V capacitor is a general-purpose capacitor with a certain temperature limit. Its capacity change is +22% to -82% and the dielectric loss is 5% within the operating temperature range of -30°C to 85°C.
Well, today's explanation is here. If you need to purchase chip capacitors, you can come to us. We have a strong team, professional workshops, high-quality products, and low prices. Welcome to online consultation!