In the complex circuit systems of electronic devices, there is a type of key component that is often overlooked but silently safeguards the electromagnetic compatibility of the devices. It is the feedthrough capacitor, also known as the through core capacitor or feedthrough capacitor. As one of the core devices for electromagnetic interference (EMI) filtering, it plays an irreplaceable role in suppressing high-frequency noise and ensuring the purity of signals.

Structurally, a feedthrough capacitor is like a “metal sandwich”: in the middle is a ceramic dielectric (a common ceramic material with a high dielectric constant), and metal electrodes cover both sides. One end of the electrode extends into a penetrating pin (core column), and the other end is connected to a metal shell (usually with threads for easy installation). Almost all electronic devices involving electromagnetic compatibility (EMC) design can see the presence of feedthrough capacitors.

From being unknown to becoming the “standard” in electromagnetic compatibility design, the LCA^® feedthrough capacitor interprets “small components, great effects” with its simple structure. In today’s increasingly complex electromagnetic environment, it is not only the “guardian” for the stable operation of electronic devices but also the “invisible cornerstone” for promoting the development of high-frequency electronic technology. Only by understanding and using it well can the electronic system remain “as stable as Mount Tai” in the electromagnetic tide.

——2017.7.19