The DLW21HN900HQ2 is a common mode choke coil manufactured by Murata Electronics North America. It is designed to suppress common mode noise in various electronic circuits, particularly in high-speed data transmission lines. This choke coil is commonly used in USB interfaces, HDMI cables, and other communication lines to reduce electromagnetic interference (EMI) and improve signal integrity.

Applications

• USB interfaces
• HDMI cables
• LVDS lines
• Differential signal lines
• High-speed data transmission lines

Features

• Common mode noise suppression: Effectively attenuates common mode noise signals.
• Compact size: Suitable for space-constrained applications.
• High impedance: Provides significant attenuation of common mode noise.
• Low DC resistance: Minimizes signal loss in the transmission line.
• Surface mount technology (SMT): Allows for automated assembly.

Benefits

• Reduced electromagnetic interference (EMI) in electronic devices.
• Improved signal integrity in high-speed data transmission lines.
• Easy integration into circuit boards due to its compact size.
• Minimal signal degradation due to low DC resistance.
• Cost-effective solution for noise suppression.

Additional Details

The DLW21HN900HQ2 is a surface-mount device (SMD) that is designed for automated assembly processes. Its compact size allows it to be placed close to the noise source, maximizing its effectiveness in suppressing common mode noise. The choke coil is characterized by its high impedance at high frequencies, which provides significant attenuation of common mode noise signals. The low DC resistance minimizes signal loss in the transmission line, ensuring that the desired signals are not significantly attenuated.

The DLW21HN900HQ2 is commonly used in applications where electromagnetic compatibility (EMC) is a concern, such as consumer electronics, industrial equipment, and automotive systems. It is particularly effective in suppressing noise generated by switching power supplies and other electronic circuits. Proper grounding and shielding techniques should be employed in conjunction with the choke coil to further reduce EMI. The datasheet provides detailed information on the device's electrical characteristics, impedance curves, and package dimensions. It is important to consult the datasheet to ensure that the choke coil is properly selected and used within its specified operating range. The DLW21HN900HQ2 offers a reliable and cost-effective solution for common mode noise suppression in a wide range of electronic applications.