DLW21SN900SQ2L

Common Mode Chokes Overview

The DLW21SN900SQ2L is a wirewound common mode filter choke from the Murata EMIFIL DLW21S series. It features a 0805 (2012 metric) surface-mount package with dimensions of 2 mm x 1.2 mm x 1.2 mm. The component provides a common mode impedance of 90 Ohms at a test frequency of 100 MHz, with a tolerance of ±25%. It supports a maximum DC current of 330 mA and has a maximum DC resistance of 350 mOhms. Rated for 50 VDC, it operates within a temperature range of -40°C to +85°C.

Common Mode Chokes Feature Summary

• Wirewound structure designed for high coupling to suppress noise on differential signal lines without causing distortion in high-speed data transmission.
• High common mode impedance at high frequencies ensures effective noise suppression performance.
• Compact molded case suitable for space-constrained PCB layouts.

Common Mode Chokes Applications

• Noise suppression for PC USB lines and peripheral connections
• LVDS line filtering in notebook computers
• USB line protection in small digital AV devices such as digital cameras

Common Mode Chokes Procurement Notes

Verify the specific suffix SQ2L against official Murata documentation to confirm packaging type and terminal finish specifications. Ensure the selected variant matches the required operating temperature range and current ratings for the target application circuit design.

Common Mode Chokes Selection Notes

Select this component when designing circuits requiring compact common mode filtering for high-speed differential interfaces like USB or LVDS. Consider the 330 mA current rating and 350 mOhms DCR to ensure compatibility with the power budget and signal integrity requirements of the specific electronic device.

Common Mode Chokes Part Context

This part belongs to the DLW21S series of surface-mount common mode chokes manufactured by Murata Electronics. The series utilizes a wirewound construction to achieve high coupling coefficients, specifically targeting EMI reduction in portable consumer electronics and computer peripherals where board space is limited.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify electrical parameters and physical dimensions before considering alternative components from other manufacturers.