kerámiakondenzátorokat

Kerámiakondenzátorokat, often referred to as ceramic capacitors, are a type of capacitor that uses a ceramic material as the dielectric. They are among the most common types of capacitors used in electronic circuits due to their low cost, small size, and good performance characteristics. The ceramic material, typically a mixture of barium titanate and other metal oxides, is sandwiched between two conductive electrodes.

The dielectric properties of the ceramic material determine the capacitor's capacitance value. Different ceramic formulations are used to achieve specific electrical characteristics, such as high capacitance density, low dielectric loss, or stable capacitance over a wide temperature range. Ceramic capacitors come in various forms, including multilayer ceramic capacitors (MLCCs), which are widely used in surface-mount technology, and disc ceramic capacitors.

MLCCs consist of multiple thin layers of ceramic dielectric interleaved with alternating layers of conductive electrodes. This construction allows for very high capacitance values in a small package. Disc ceramic capacitors are typically through-hole components used in older or less miniaturized applications.

Ceramic capacitors are used in a vast array of electronic devices, including power supplies, radio frequency circuits, decoupling applications, and timing circuits. Their ability to withstand high frequencies and their cost-effectiveness make them indispensable components in modern electronics. However, some types of ceramic capacitors can exhibit piezoelectric effects, which can lead to microphonics, and their capacitance can vary significantly with temperature and applied voltage.