KNH21C104DA3TS Filters

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EMI/RFI Filters are used in many electronic applications. Among these filters, the most popular and widely used are LC filters, RC filter networks, and one of the prominent ones is the KNH21C104DA3TS. Let us discuss how it functions and its application field.

KNH21C104DA3TS is a surface-mounted chip capacitor that can be used for both signal and power transmission. It is a single-layer filter and uses a red film (R-film) as a dielectric material. This type of dielectric provides low parasitic capacitance. It has a capacitance of 0.1µF and a voltage rating of 50V.

Now coming to its working principle, this chip capacitor works by blocking high-frequency interference signals and passing only the low-frequency signals. Firstly, the EMI/RFI filter receives input signals which can be either alternating current (AC) or direct current (DC) voltage. Then, the chip capacitor generates two capacitors (C1, C2). C1 passes the low-frequency signals while C2 blocks the high-frequency signals. After that, the capacitor passes both the low- and high-frequency signals to the output.

KNH21C104DA3TS is a versatile chip capacitor that can be used in various application fields. It is mainly used in the military, medical and aerospace industry due to its low parasitic capacitance. It is also used in consumer electronic devices, such as cell phones, televisions, and gaming consoles, to reduce the amount of interference on signal transmission signals. Furthermore, it can be used in industrial applications, such as communication systems, surveillance systems, and instrumentation systems, to prevent the propagation of an undesired signal.

In conclusion, the KNH21C104DA3TS chip capacitor is a versatile EMI/RFI filter that can be used in many different application fields, such as the military, medical and aerospace industry, consumer electronic devices, and industrial applications. It works by generating two capacitors (C1, C2), where C1 passes the low-frequency signals and C2 blocks the high-frequency signals. Therefore, it is suitable for signal transmission and power transmission applications.

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