Ceramic capacitor is a high-performance electronic component, with a wide range of temperature coefficients, large specific capacitance, good moisture resistance, and small dielectric loss, which is widely used in electronic circuits.
Ceramic capacitors have a high dielectric constant, which means that they are able to store a large amount of charge in a small volume, which can provide higher capacitance values for electronic products, which allows ceramic capacitors to achieve smaller size and higher performance in portable electronic devices such as mobile phones.
Multilayer ceramic capacitors are especially important because the volume of multilayer ceramic capacitors MLCCs is very small, as small as a grain of sand. How do multilayer ceramic capacitors MLCCs achieve a volume as small as a grain of sand? This is due to the unique structure and manufacturing process of the multilayer ceramic capacitor MLCC.
1. The structure of multilayer ceramic capacitor MLCC.
The MLCC achieves extremely high capacitance values by stacking multiple ceramic layers and internal electrodes on top of each other. This structure not only increases the capacitance of the capacitor, but also reduces the overall size by reducing the thickness of each layer.
2. The manufacturing process of multilayer ceramic capacitor MLCC.
1. Material preparation.
It is necessary to prepare a ceramic powder with a high dielectric constant and a conductive material for the formation of the internal electrodes.
2. Casting molding.
Ceramic powder is mixed with a solvent to make a slurry, which is then formed into a thin and uniform ceramic film on a flat surface through a casting process.
3. Printed electrode.
A conductive material is printed on a ceramic film to form an internal electrode. These electrodes are usually arranged alternately in order to form capacitance during subsequent stacking.
4. Lamination and sintering.
Multiple ceramic films with electrodes are superimposed layer by layer, and then the ceramic film and electrode are tightly combined through a high-temperature sintering process to form a whole.
5. End processing and testing.
The sintered ceramic capacitors are terminated, such as soldered pins, and tested for electrical performance to ensure that they meet the specifications.
Through the above manufacturing process, MLCCs such as multilayer ceramic capacitors the size of sand grains are produced in this way, saving space while maintaining high capacitance values and good electrical performance.
Capacitance