DLW21SZ491XQ2L Filters

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Common mode chokes, also known as CM Chokes have a strong ability to prevent electromagnetic interference (EMI) of electrical and electronic equipment. Typically, the function of a common mode choke filter is to reduce the amount of interference produced by multiple conductors and prevent the generation of a common mode current, thus protecting the device from damage. The DLW21SZ491XQ2L is one such device.

Common mode chokes are widely used in electrical and electronic systems, such as communication systems, home automation systems, data acquisition systems, automotive systems, automation systems, and more. Generally, common mode chokes are not required for circuits operating at a single frequency, however, they are essential in multi-frequency circuits.

The working principle of a common mode choke is based on the fundamental of Electromagnetic Field Theory. The choke works by blocking or absorbing the high frequency currents generated by the electronic component, thus reducing the amount of electromagnetic interference in the circuit.

The DLW21SZ491XQ2L is commonly used in high voltage, high current, and low power applications. It is designed to provide a path to EMI frequency currents, while allowing the normal DC signals to pass through with low or no attenuation. The common mode choke also provides an improved EMI shielding performance than other filtering devices.

The DLW21SZ491XQ2L is also used in high-speed digital systems, such as USB, HDMI, and high-speed Ethernet applications. Its low inductance values help to reduce EMI and RFI in these types of applications. Additionally, because of its high pulse current capability, the DLW21SZ491XQ2L can also be used in power line communication systems.

The DLW21SZ491XQ2L is also designed to provide low insertion losses at high frequencies and high power levels. Its tight air gap structure allows it to maintain its excellent common mode impedance even when operating at very high frequencies. The tight air gap feature also provides a low coupling level between the common mode and differential mode currents.

Overall, the DLW21SZ491XQ2L is a reliable and efficient common mode choke designed to reduce electromagnetic interference in a wide range of electrical and electronic systems. Its tight air gap structure helps to maintain excellent common mode impedance even when operating at high frequencies, while its low insertion losses allow for reduced levels of EMI/RFI in high-speed digital systems. The DLW21SZ491XQ2L is an ideal choice for high voltage, high current, and low power applications.

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