KNH21C473DA3TS Filters

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

EMI/RFI filters, especially those based on LC and RC networks, have become an increasingly popular way to control electromagnetic interference (EMI) and radio frequency interference (RFI). Filters of this type have been used in a variety of applications, including performance optimization for radar receivers, use in high-voltage power grids, and protection for sensitive electronics against high-frequency noise.

The KNH21C473DA3TS is one such EMI/RFI filter, specifically designed for use in consumer electronics. Its primary function is the suppression of electromagnetic pulses that can occur in high-frequency electrical circuits due to transient changes in the electrical current. The filter, therefore, helps to protect the circuitry and components from the potentially damaging effects of these transient changes.

The KNH21C473DA3TS consists of three components: a DC blocking capacitor, an inductor, and a resistor. The capacitor acts to block any direct current (DC) from passing through the circuit, while simultaneously allowing only alternating current (AC) of the desired frequency to pass. The inductor then helps to attenuate high frequency noise, and the resistor is primarily responsible for attenuating and absorbing most of the noise that remains after the inductor.

The filter is designed to incorporate a differential signal configuration, allowing the user to protect two-wire and three-wire communication systems in addition to unbalanced single-wire systems. It also features an integrated ground terminal, allowing it to be used in applications with power and ground wires. Furthermore, its compact design (2.0 x 1.2 mm) makes it suitable for most consumer electronic devices that require low-profile protection.

When used in signal transmission applications, the KNH21C473DA3TS can help ensure reliable communication by attenuating both EMI and RFI signals. It also helps reduce the effect of common-mode currents, reducing the risk of power supply noise affecting sensitive components in the system. Additionally, the filter helps to provide a stable impedance level, enhancing signal integrity and ensuring that the desired frequency response characteristics are maintained.

In addition to its primary purpose of noise suppression, the KNH21C473DA3TS can also be used to provide surge protection in both AC and DC circuits. Its limited form factor also makes it ideal for applications where space is a premium, such as in the automotive, medical, and telecommunications industries. This makes the KNH21C473DA3TS an invaluable tool for designers requiring a reliable, low-cost method of signal integrity and EMI/RFI suppression.

The specific data is subject to PDF, and the above content is for reference