DLP31DN900ML4L Filters

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Common Mode Chokes are composed of two coils winded around the same magnetic core. It features excellent characteristic impedances and electrical performances, with a lower insertion loss than other types of filters and wires. DLP31DN900ML4L is a highly performing Common Mode Choke from Murata. It can be utilized for filtering and noise suppression across several different applications, including power supplies, telecommunications, automotive industry, medical systems, and more.

DLP31DN900ML4L is built with Murata’s unique material technology, making it capable of preventing electrical signs from flowing through the lines while allowing a higher inductance at lower DC bias current. It can effectively remove noise generated by DC power and unnecessary frequency waves from electric devices. Specifically, its operating temperature range is from -40 to +85 degrees Celsius, impedance range from 600 to 900 Ohms, inductance range from 0.3 to 3.3 mH, and DC bias current from 0 to 10 mA.

DLP31DN900ML4L Common Mode Choke features excellent electrical characteristics, such as direct current resistance (DCR) and rated current. The DCR can reach 0.06Ω, which is much lower than the typical value of 0.2Ω – 0.3Ω for this type of choke. Its rated current is 1.3A, higher than the typical value of 0.5A – 1.0A. As a result, it has a high switching frequency, which makes it suitable for applications, such as DC/DC converters, motor drives, and Bluetooth/Wi-Fi modules.

The fundamental mechanism allowing Common Mode Chokes to perform the required function of isolating and blocking the transfer of electric signals is the principle of mutual inductance. Mutual inductance is a phenomenon where energy is transferred from one coil to another without the need of any physical connection between them. This is how the DLP31DN900ML4L choke works. It creates a barrier between two wires, blocking and suppressing electrical signals that attempt to pass through it. Meanwhile, the noise suppression follows the principle of impedance matching, as the choke’s impedance is much higher at higher frequencies, making it a good match for suppressing those frequencies.

In summary, DLP31DN900ML4L Common Mode Choke can be used for filtering and suppressing electrical noises in various applications, such as switching power supplies and motor drives, where its high switching frequency makes it suitable for fast signals. Its structure consists of two coils winded around the magnetic core, and it works based on the principle of mutual inductance, blocking unwanted frequencies from passing through. Furthermore, its DCR and rated current are much higher than the typical values for this type of choke, increasing its efficiency and making it a great option for noise suppression.

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