The difference between through core capacitance and ordinary capacitance is mainly reflected in the structure and working principle. The pierced capacitor (also known as pierced capacitor or Y2 capacitor) is a special type of capacitor, which is mainly used to suppress high-frequency noise and meets UL/VDE safety certification standards. Ordinary capacitors refer to other types of capacitors, which are often used to store charges and filter.
1. Structural differences:
Ordinary capacitors are usually composed of insulating medium (dielectric) between two metal plates (called plates), such as aluminum electrolytic capacitors TLV320AIC3101IRHBR Tantalum capacitor, ceramic capacitor, etc. This structure makes the ability of suppressing high-frequency noise of ordinary capacitors weak.
The through core capacitor adopts a special structural design. It consists of a metal electrode plate sandwiched between two electrode plates. The electrode plate passes through the housing of the capacitor through an insulating material (usually polypropylene). This structure makes the through core capacitor have better performance in high-frequency noise suppression.
2. Working principle difference:
The working principle of common capacitor is to store charge between two plates of capacitor. Its ability to pass signals of different frequencies is determined by the capacitance value of the capacitor. The capacitance value of ordinary capacitors usually has good performance in the low frequency range (below tens of kHz).
The working principle of the through core capacitor is realized through a plurality of capacitor branches formed between the perforated electrode and the metal shell. This structure enables the through - core capacitor to effectively filter out high-frequency noise. In the high-frequency range (tens of kHz to hundreds of MHz), the capacitance value of the through core capacitor is more stable, which means that it can provide better high-frequency noise suppression capability.
3. High frequency noise filtering capability:
The main reasons why the through core capacitor can effectively filter out high-frequency noise are as follows:
The special structure of the through core capacitor makes its frequency characteristics more flat and can provide better high-frequency noise suppression capability.
The capacitance value of the through core capacitor is more stable and can maintain a good filtering effect in the high-frequency range.
The through core capacitor complies with UL/VDE safety certification standards, and can ensure circuit safety while suppressing high-frequency noise.
The through core capacitor usually has high withstand voltage capability and can adapt to the application under high voltage environment.
To sum up, the difference between through core capacitance and ordinary capacitance mainly lies in the structure and working principle. Through its special structure and working principle, the through core capacitor can effectively filter out high-frequency noise, and has good high-frequency characteristics and safety performance. This makes the through capacitor an ideal choice for high-frequency noise filtering in many applications.
