ELF-24V100A

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Common Mode Chokes are a type of electrical device for suppressing common mode current and therefore eliminating common mode interference, such as electromagnetic interference (EMI) and radio frequency interference (RFI). The ELF-24V100A is a specific example of a Common Mode Choke and is used in a variety of applications. This article will discuss the specific application field and working principle of the ELF-24V100A.

The ELF-24V100A is a surface-mount Common Mode Choke, designed for applications both on and off the board. It is commonly used for suppressing EMI/RFI to meet the requirements of certain international standards, such as FCC/ICES-003, and IEC 60255 parts 1 and 3. The ELF-24V100A is especially suitable for data and control lines, as well as audio lines in which good common mode suppression is required, and is often used in medical, energy metering and industrial applications.

The ELF-24V100A has a rated current of 100mA and a rated voltage of 24V, and is designed to be used in a frequency range from 100kHz to 1GHz. It features a low profile of 1.1mm, and a high common mode inductance of 4.7uH. The device also has a high insulation resistance of 50V. This makes it suitable for applications that require robust and reliable performance.

In terms of working principle, the ELF-24V100A is a surface mount Common Mode Choke. The device has two winding coils that are connected in parallel, and are wound in opposite directions. This creates a spark between the two coils, which suppresses high-frequency current, such as EMI and RFI. The difference in voltage between the two coils is referred to as the common mode voltage, and this is what is suppressed by the device.

The device also has an integrated circuit that helps to improve its performance. The circuit is designed to sense a rising common mode voltage, and in response, it reduces the amount of current flowing through the coils. This helps to further reduce the amount of noise generated by the device, as well as improving its overall efficiency.

In summary, the ELF-24V100A is a surface-mount Common Mode Choke designed for applications that require robust and reliable performance. It has a rated current of 100mA and a rated voltage of 24V, and is designed to work within a frequency range from 100kHz to 1GHz. It has two windings that are connected in parallel, and are wound in opposite directions to suppress high-frequency current. Finally, it has an integrated circuit that helps to further reduce noise and improve efficiency. This makes it suitable for a variety of applications, including medical, energy metering and industrial applications.

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