ACF451832-103-TLD01

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ACF451832-103-TLD01 application field and working principle

The ACF451832-103-TLD01 is an EMI/RFI filter, typically referred to as an LC (longitudinal coupler) or RC (resonant coupler) Network. It is a passive component used to reduce Electromagnetic Interference (EMI) and/or Radio Frequency Interference (RFI) in an electrical or electronic circuit.

The device is designed to attenuate or “block” certain frequencies and electrical signals. This is done by using inductors and capacitors that are connected in series or parallel configurations to form LC or RC “networks”. These networks are tuned to specific frequencies that need to be blocked, such as those produced by switching power supplies, motors, and other electronic devices.

The ACF451832-103-TLD01 has a relatively low-power rating, making it suitable for applications that require high-frequency attenuation or where power consumption needs to be minimized. The device is composed of four independent circuits with different topologies: three 4518 and one 4141 circuits, which are coupled together serially, allowing for highly-efficient attenuation of high frequency signals while providing relatively low-power loss.

The 4518 and 4141 circuits are specially configured to provide peak frequency attenuation at defined frequencies, which are chosen based on the application. The ACF451832-103-TLD01 also has enhanced high-frequency performance compared to other similar devices, with maximum frequency attenuation achieved at up to 12GHz. In addition, the device features wide frequency range attenuation which is suitable for applications across different frequency bands.

The ACF451832-103-TLD01 also provides good blocking properties for wireless applications in the ISM (Industrial, Scientific and Medical) bands, and as such is popular for device manufacturers looking to comply with FCC regulations. The device is designed to minimize insertion loss and maximize attenuation of EMI/RFI interference, with impedance matching between the source and the device leading to better filtering properties.

In summary, the ACF451832-103-TLD01 is an EMI/RFI filter designed to attenuate or “block” certain frequencies and electrical signals using a combination of LC and RC “networks”. It offers enhanced high-frequency performance with maximum frequency attenuation at up to 12GHz, making it suitable for applications requiring wide frequency range attenuation or high-frequency attenuation. Additionally, the device is suitable for applications in the ISM bands and helps manufacturers comply with FCC regulations.

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